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NSR database version of April 26, 2024.

Search: Author = R.R.Betts

Found 123 matches.

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2011AL03      Phys.Rev. C 83, 024913 (2011)

B.Alver, B.B.Back, M.D.Baker, M.Ballintijn, D.S.Barton, R.R.Betts, A.A.Bickley, R.Bindel, A.Budzanowski, W.Busza, A.Carroll, Z.Chai, V.Chetluru, M.P.Decowski, E.Garcia, T.Gburek, N.George, K.Gulbrandsen, S.Gushue, C.Halliwell, J.Hamblen, G.A.Heintzelman, C.Henderson, D.J.Hofman, R.S.Hollis, R.Holynski, B.Holzman, A.Iordanova, E.Johnson, J.L.Kane, J.Katzy, N.Khan, J.Kotula, W.Kucewicz, P.Kulinich, C.M.Kuo, W.Li, W.T.Lin, C.Loizides, S.Manly, D.McLeod, J.Michalowski, A.C.Mignerey, R.Nouicer, A.Olszewski, R.Pak, I.C.Park, H.Pernegger, C.Reed, L.P.Remsberg, M.Reuter, C.Roland, G.Roland, L.Rosenberg, J.Sagerer, P.Sarin, P.Sawicki, I.Sedykh, W.Skulski, C.E.Smith, S.G.Steadman, P.Steinberg, G.S.F.Stephans, M.Stodulski, A.Sukhanov, M.B.Tonjes, A.Trzupek, C.Vale, G.J.van Nieuwenhuizen, S.S.Vaurynovich, R.Verdier, G.I.Veres, B.Wadsworth, P.Walters, E.Wenger, F.L.H.Wolfs, B.Wosiek, K.Wozniak, A.H.Wuosmaa, B.Wyslouch

Charged-particle multiplicity and pseudorapidity distributions measured with the PHOBOS detector in Au + Au, Cu + Cu, d + Au, and p + p collisions at ultrarelativistic energies

doi: 10.1103/PhysRevC.83.024913
Citations: PlumX Metrics

2010AL01      Phys.Rev.Lett. 104, 062301 (2010)

B.Alver, B.B.Back, M.D.Baker, M.Ballintijn, D.S.Barton, R.R.Betts, A.A.Bickley, R.Bindel, W.Busza, A.Carroll, Z.Chai, V.Chetluru, M.P.Decowski, E.Garcia, T.Gburek, N.George, K.Gulbrandsen, C.Halliwell, J.Hamblen, M.Hauer, C.Henderson, D.J.Hofman, R.S.Hollis, R.Holynski, B.Holzman, A.Iordanova, E.Johnson, J.L.Kane, N.Khan, P.Kulinich, C.M.Kuo, W.Li, W.T.Lin, C.Loizides, S.Manly, A.C.Mignerey, R.Nouicer, A.Olszewski, R.Pak, C.Reed, C.Roland, G.Roland, J.Sagerer, H.Seals, I.Sedykh, C.E.Smith, M.A.Stankiewicz, P.Steinberg, G.S.F.Stephans, A.Sukhanov, M.B.Tonjes, A.Trzupek, C.Vale, G.J.van Nieuwenhuizen, S.S.Vaurynovich, R.Verdier, G.I.Veres, P.Walters, E.Wenger, F.L.H.Wolfs, B.Wosiek, K.Wozniak, B.Wyslouch

High Transverse Momentum Triggered Correlations over a Large Pseudorapidity Acceptance in Au + Au Collisions at √ s_NN = 200 GeV

doi: 10.1103/PhysRevLett.104.062301
Citations: PlumX Metrics

2010AL04      Phys.Rev. C 81, 024904 (2010)

B.Alver, B.B.Back, M.D.Baker, M.Ballintijn, D.S.Barton, R.R.Betts, R.Bindel, W.Busza, Z.Chai, V.Chetluru, E.Garcia, T.Gburek, K.Gulbrandsen, J.Hamblen, I.Harnarine, C.Henderson, D.J.Hofman, R.S.Hollis, R.Holynski, B.Holzman, A.Iordanova, J.L.Kane, P.Kulinich, C.M.Kuo, W.Li, W.T.Lin, C.Loizides, S.Manly, A.C.Mignerey, R.Nouicer, A.Olszewski, R.Pak, C.Reed, E.Richardson, C.Roland, G.Roland, J.Sagerer, I.Sedykh, C.E.Smith, M.A.Stankiewicz, P.Steinberg, G.S.F.Stephans, A.Sukhanov, A.Szostak, M.B.Tonjes, A.Trzupek, G.J.van Nieuwenhuizen, S.S.Vaurynovich, R.Verdier, G.I.Veres, P.Walters, E.Wenger, D.Willhelm, F.L.H.Wolfs, B.Wosiek, K.Wozniak, S.Wyngaardt, B.Wyslouch

System size dependence of cluster properties from two-particle angular correlations in Cu+Cu and Au+Au collisions at √ s_NN = 200 GeV

doi: 10.1103/PhysRevC.81.024904
Citations: PlumX Metrics

2010AL08      Phys.Rev.Lett. 104, 142301 (2010)

B.Alver, B.B.Back, M.D.Baker, M.Ballintijn, D.S.Barton, R.R.Betts, A.A.Bickley, R.Bindel, W.Busza, A.Carroll, Z.Chai, M.P.Decowski, E.Garcia, T.Gburek, N.George, K.Gulbrandsen, C.Halliwell, J.Hamblen, M.Hauer, C.Henderson, D.J.Hofman, R.S.Hollis, R.Holynski, B.Holzman, A.Iordanova, E.Johnson, J.L.Kane, N.Khan, P.Kulinich, C.M.Kuo, W.Li, W.T.Lin, C.Loizides, S.Manly, A.C.Mignerey, R.Nouicer, A.Olszewski, R.Pak, C.Reed, C.Roland, G.Roland, J.Sagerer, H.Seals, I.Sedykh, C.E.Smith, M.A.Stankiewicz, P.Steinberg, G.S.F.Stephans, A.Sukhanov, M.B.Tonjes, A.Trzupek, C.Vale, G.J.van Nieuwenhuizen, S.S.Vaurynovich, R.Verdier, G.I.Veres, P.Walters, E.Wenger, F.L.H.Wolfs, B.Wosiek, K.Wozniak, B.Wyslouch

Event-by-Event Fluctuations of Azimuthal Particle Anisotropy in Au+Au Collisions at √ s_NN = 200 GeV

doi: 10.1103/PhysRevLett.104.142301
Citations: PlumX Metrics

2008AL02      Phys.Rev. C 77, 014906 (2008)

B.Alver, B.B.Back, M.D.Baker, M.Ballintijn, D.S.Barton, R.R.Betts, R.Bindel, W.Busza, V.Chetluru, E.Garcia, T.Gburek, J.Hamblen, U.Heinz, D.J.Hofman, R.S.Hollis, A.Iordanova, W.Li, C.Loizides, S.Manly, A.C.Mignerey, R.Nouicer, A.Olszewski, C.Reed, C.Roland, G.Roland, J.Sagerer, P.Steinberg, G.S.F.Stephans, M.B.Tonjes, A.Trzupek, G.J.van Nieuwenhuizen, S.S.Vaurynovich, R.Verdier, G.I.Veres, P.Walters, E.Wenger, B.Wosiek, K.Wozniak, B.Wyslouch

Importance of correlations and fluctuations on the initial source eccentricity in high-energy nucleus-nucleus collisions

doi: 10.1103/PhysRevC.77.014906
Citations: PlumX Metrics

2008AL15      Phys.Rev. C 77, 061901 (2008)

B.Alver, B.B.Back, M.D.Baker, M.Ballintijn, D.S.Barton, R.R.Betts, R.Bindel, W.Busza, Z.Chai, V.Chetluru, E.Garcia, T.Gburek, K.Gulbrandsen, J.Hamblen, I.Harnarine, C.Henderson, D.J.Hofman, R.S.Hollis, R.Holynski, B.Holzman, A.Iordanova, J.L.Kane, P.Kulinich, C.M.Kuo, W.Li, W.T.Lin, C.Loizides, S.Manly, A.C.Mignerey, R.Nouicer, A.Olszewski, R.Pak, C.Reed, E.Richardson, C.Roland, G.Roland, J.Sagerer, I.Sedykh, C.E.Smith, M.A.Stankiewicz, P.Steinberg, G.S.F.Stephans, A.Sukhanov, A.Szostak, M.B.Tonjes, A.Trzupek, G.J.van Nieuwenhuizen, S.S.Vaurynovich, R.Verdier, G.I.Veres, P.Walters, E.Wenger, D.Willhelm, F.L.H.Wolfs, B.Wosiek, K.Wozniak, S.Wyngaardt, B.Wyslouch

Identified charged antiparticle to particle ratios near midrapidity in Cu+Cu collisions at √ s_NN = 62.4 and 200 GeV

doi: 10.1103/PhysRevC.77.061901
Citations: PlumX Metrics

2007AL31      Phys.Rev. C 75, 054913 (2007)

B.Alver, B.B.Back, M.D.Baker, M.Ballintijn, D.S.Barton, R.R.Betts, R.Bindel, W.Busza, Z.Chai, V.Chetluru, E.Garcia, T.Gburek, K.Gulbrandsen, J.Hamblen, I.Harnarine, C.Henderson, D.J.Hofman, R.S.Hollis, R.Holynski, B.Holzman, A.Iordanova, J.L.Kane, P.Kulinich, C.M.Kuo, W.Li, W.T.LIn, C.Lozides, S.Manly, A.C.Mignerey, R.Nouicer, A.Olszewski, R.Pak, C.Reed, E.Richardson, C.Roland, G.Roland, J.Sagerer, I.Sedykh, C.E.Smith, M.A.Stankiewicz, P.Steinberg, G.S.F.Stephens, A.Sukhanov, A.Szopstak, M.B.Tonjes, A.Trzupek, G.J.van Nieuwenhuizen, S.S.Vaurynovich, R.Verier, G.I.Veres, P.Walters, E.Wenger, D.Willhelm, F.L.H.Wolfs, B.Wosiek, K.Wozniak, S.Wyngaardt, B.Wyslouch

Cluster properties from two-particle angular correlations in p+p collisions at √ s = 200 and 410 GeV

NUCLEAR REACTIONS ¹H(p, X), E(cm)=200, 410 GeV; measured two particle angular correlations. Compared results to model calculations.

doi: 10.1103/PhysRevC.75.054913
Citations: PlumX Metrics

2007BE63      J.Phys.(London) G34, S519 (2007)

R.R.Betts, for the CMS Collaboration

Heavy-ion physics with CMS

doi: 10.1088/0954-3899/34/8/S42
Citations: PlumX Metrics

2006AL11      Phys.Rev.Lett. 96, 212301 (2006)

B.Alver, B.B.Back, M.D.Baker, M.Ballintijn, D.S.Barton, R.R.Betts, R.Bindel, W.Busza, Z.Chai, V.Chetluru, E.Garcia, T.Gburek, K.Gulbrandsen, J.Hamblen, I.Harnarine, C.Henderson, D.J.Hofman, R.S.Hollis, R.Holynski, B.Holzman, A.Iordanova, J.L.Kane, P.Kulinich, C.M.Kuo, W.Li, W.T.Lin, C.Loizides, S.Manly, A.C.Mignerey, R.Nouicer, A.Olszewski, R.Pak, C.Reed, E.Richardson, C.Roland, G.Roland, J.Sagerer, I.Sedykh, C.E.Smith, M.A.Stankiewicz, P.Steinberg, G.S.F.Stephans, A.Sukhanov, A.Szostak, M.B.Tonjes, A.Trzupek, G.J.van Nieuwenhuizen, S.S.Vaurynovich, R.Verdier, G.I.Veres, P.Walters, E.Wenger, D.Willhelm, F.L.H.Wolfs, B.Wosiek, K.Wozniak, S.Wyngaardt, B.Wyslouch

System Size and Centrality Dependence of Charged Hadron Transverse Momentum Spectra in Au + Au and Cu + Cu Collisions at √ s_NN = 62.4 and 200 GeV

NUCLEAR REACTIONS Cu(Cu, X), Au(Au, X), E(cm)=62.4, 200 GeV/nucleon; measured charged hadrons transverse momentum spectra; deduced system size and centrality dependence, nuclear modification factors.

doi: 10.1103/PhysRevLett.96.212301
Citations: PlumX Metrics

2005BA17      Phys.Rev.Lett. 94, 082304 (2005)

B.B.Back, M.D.Baker, M.Ballintijn, D.S.Barton, R.R.Betts, A.A.Bickley, R.Bindel, W.Busza, A.Carroll, Z.Chai, M.P.Decowski, E.Garcia, T.Gburek, N.George, K.Gulbrandsen, C.Halliwell, J.Hamblen, M.Hauer, C.Henderson, D.J.Hofman, R.S.Hollis, R.Holynski, B.Holzman, A.Iordanova, E.Johnson, J.L.Kane, N.Khan, P.Kulinich, C.M.Kuo, W.T.Lin, S.Manly, A.C.Mignerey, R.Nouicer, A.Olszewski, R.Pak, C.Reed, C.Roland, G.Roland, J.Sagerer, H.Seals, I.Sedykh, C.E.Smith, M.A.Stankiewicz, P.Steinberg, G.S.F.Stephans, A.Sukhanov, M.B.Tonjes, A.Trzupek, C.Vale, G.J.van Nieuwenhuizen, S.S.Vaurynovich, R.Verdier, G.I.Veres, E.Wenger, F.L.H.Wolfs, B.Wosiek, K.Wozniak, B.Wyslouch

Centrality Dependence of Charged Hadron Transverse Momentum Spectra in Au + Au Collisions from √ s_NN = 62.4 to 200 GeV

NUCLEAR REACTIONS ¹⁹⁷Au(¹⁹⁷Au, X), E(cm)=62.4 GeV/nucleon; measured charged hadrons transverse momentum spectra, centrality dependence; deduced medium modification factor. Comparison with data at higher energies.

doi: 10.1103/PhysRevLett.94.082304
Citations: PlumX Metrics

2005BA32      Phys.Rev.Lett. 94, 122303 (2005)

B.B.Back, M.D.Baker, M.Ballintijn, D.S.Barton, R.R.Betts, A.A.Bickley, R.Bindel, A.Budzanowski, W.Busza, A.Carroll, Z.Chai, M.P.Decowski, E.Garcia, T.Gburek, N.George, K.Gulbrandsen, S.Gushue, C.Halliwell, J.Hamblen, M.Hauer, G.A.Heintzelman, C.Henderson, D.J.Hofman, R.S.Hollis, R.Holynski, B.Holzman, A.Iordanova, E.Johnson, J.L.Kane, J.Katzy, N.Khan, W.Kucewicz, P.Kulinich, C.M.Kuo, W.T.Lin, S.Manly, D.McLeod, A.C.Mignerey, R.Nouicer, A.Olszewski, R.Pak, I.C.Park, H.Pernegger, C.Reed, L.P.Remsberg, M.Reuter, C.Roland, G.Roland, L.Rosenberg, J.Sagerer, P.Sarin, P.Sawicki, H.Seals, I.Sedykh, W.Skulski, C.E.Smith, M.A.Stankiewicz, P.Steinberg, G.S.F.Stephans, A.Sukhanov, J.-L.Tang, M.B.Tonjes, A.Trzupek, C.Vale, G.J.van Nieuwenhuizen, S.S.Vaurynovich, R.Verdier, G.I.Veres, E.Wenger, F.L.H.Wolfs, B.Wosiek, K.Wozniak, A.H.Wuosmaa, B.Wyslouch

Energy Dependence of Elliptic Flow over a Large Pseudorapidity Range in Au+Au Collisions at the BNL Relativistic Heavy Ion Collider

NUCLEAR REACTIONS ¹⁹⁷Au(¹⁹⁷Au, X), E(cm)=19.6, 62.4, 130, 200 GeV/nucleon; measured elliptic flow; deduced energy and pseudorapidity dependence.

doi: 10.1103/PhysRevLett.94.122303
Citations: PlumX Metrics

2005BA83      Phys.Rev. C 72, 031901 (2005)

B.B.Back, M.D.Baker, M.Ballintijn, D.S.Barton, B.Becker, R.R.Betts, A.A.Bickley, R.Bindel, W.Busza, A.Carroll, M.P.Decowski, E.Garcia, T.Gburek, N.George, K.Gulbrandsen, S.Gushue, C.Halliwell, J.Hamblen, A.S.Harrington, C.Henderson, D.J.Hofman, R.S.Hollis, R.Holynski, B.Holzman, A.Iordanova, E.Johnson, J.L.Kane, N.Khan, P.Kulinich, C.M.Kuo, J.W.Lee, W.T.Lin, S.Manly, A.C.Mignerey, R.Nouicer, A.Olszewski, R.Pak, I.C.Park, H.Pernegger, C.Reed, C.Roland, G.Roland, J.Sagerer, P.Sarin, I.Sedykh, W.Skulski, C.E.Smith, P.Steinberg, G.S.F.Stephans, A.Sukhanov, M.B.Tonjes, A.Trzupek, C.Vale, G.J.van Nieuwenhuizen, R.Verdier, G.I.Veres, F.L.H.Wolfs, B.Wosiek, K.Wozniak, B.Wyslouch, J.Zhang

Scaling of charged particle production in d+Au collisions at √ s_NN = 200 GeV

NUCLEAR REACTIONS ¹⁹⁷Au(d, X), E(cm)=200 GeV/nucleon; analyzed charged particle pseudorapidity distribution, integrated multiplicities vs centrality.

doi: 10.1103/PhysRevC.72.031901
Citations: PlumX Metrics

2004BA01      Phys.Lett. B 578, 297 (2004)

B.B.Back, M.D.Baker, D.S.Barton, R.R.Betts, M.Ballintijn, A.A.Bickley, R.Bindel, A.Budzanowski, W.Busza, A.Carroll, M.P.Decowski, E.Garcia, N.George, K.Gulbrandsen, S.Gushue, C.Halliwell, J.Hamblen, G.A.Heintzelman, C.Henderson, D.J.Hofman, R.S.Hollis, R.Holynski, B.Holzman, A.Iordanova, E.Johnson, J.L.Kane, J.Katzy, N.Khan, W.Kucewicz, P.Kulinich, C.M.Kuo, W.T.Lin, J.W.Lee, S.Manly, D.McLeod, A.C.Mignerey, R.Nouicer, A.Olszewski, R.Pak, I.C.Park, H.Pernegger, C.Reed, L.P.Remsberg, M.Reuter, C.Roland, G.Roland, L.Rosenberg, J.Sagerer, P.Sarin, P.Sawicki, W.Skulski, S.G.Steadman, P.Steinberg, G.S.F.Stephans, A.Sukhanov, J.-L.Tang, R.Teng, A.Trzupek, C.Vale, G.J.van Nieuwenhuizen, R.Verdier, G.I.Veres, B.Wadsworth, F.L.H.Wolfs, B.Wosiek, K.Wozniak, A.H.Wuosmaa, B.Wyslouch

Charged hadron transverse momentum distributions in Au + Au collisions at √ s_NN = 200 GeV

NUCLEAR REACTIONS ¹⁹⁷Au(¹⁹⁷Au, X), E(cm)=200 GeV/nucleon; measured charged hadron transverse momentum distributions vs centrality, invariant yields; deduced scaling features.

doi: 10.1016/j.physletb.2003.10.101
Citations: PlumX Metrics

2004BA20      Braz.J.Phys. 34, 829 (2004)

B.B.Back, M.D.Baker, M.Ballintijn, D.S.Barton, B.Becker, R.R.Betts, A.A.Bickley, R.Bindel, A.Budzanowski, W.Busza, A.Carroll, M.P.Decowski, E.Garcia, T.Gburek, N.George, K.Gulbrandsen, S.Gushue, C.Halliwell, J.Hamblen, A.S.Harrington, G.A.Heintzelman, C.Henderson, D.J.Hofman, R.S.Hollis, R.Holynski, B.Holzman, A.Iordanova, E.Johnson, J.L.Kane, J.Katzy, N.Khan, W.Kucewicz, P.Kulinich, C.M.Kuo, J.W.Lee, W.T.Lin, S.Manly, D.McLeod, A.C.Mignerey, R.Nouicer, A.Olszewski, R.Pak, I.C.Park, H.Pernegger, C.Reed, L.P.Remsberg, M.Reuter, C.Roland, G.Roland, L.Rosenberg, J.Sagerer, P.Sarin, P.Sawicki, I.Sedykh, W.Skulski, C.E.Smith, P.Steinberg, G.S.F.Stephans, A.Sukhanov, J.-L.Tang, M.B.Tonjes, A.Trzupek, C.Vale, G.J.van Nieuwenhuizen, R.Verdier, G.I.Veres, F.L.H.Wolfs, B.Wosiek, K.Wozniak, A.H.Wuosmaa, B.Wyslouch, J.Zhang

Recent Results from PHOBOS at RHIC

NUCLEAR REACTIONS ¹⁹⁷Au(d, X), (¹⁹⁷Au, X), E(cm)=19.6, 130, 200 GeV/nucleon; measured charged particles pseudorapidity distributions, transverse momentum, yields; deduced nuclear modification factors.

doi: 10.1590/s0103-97332004000500032
Citations: PlumX Metrics

2004BB20      Braz.J.Phys. 34, 829 (2004)

B.B.Back, M.D.Baker, M.Ballintijn, D.S.Barton, B.Becker, R.R.Betts, A.A.Bickley, R.Bindel, A.Budzanowski, W.Busza, A.Carroll, M.P.Decowski, E.Garcia, T.Gburek, N.George, K.Gulbrandsen, S.Gushue, C.Halliwell, J.Hamblen, A.S.Harrington, G.A.Heintzelman, C.Henderson, D.J.Hofman, R.S.Hollis, R.Holynski, B.Holzman, A.Iordanova, E.Johnson, J.L.Kane, J.Katzy, N.Khan, W.Kucewicz, P.Kulinich, C.M.Kuo, J.W.Lee, W.T.Lin, S.Manly, D.McLeod, A.C.Mignerey, R.Nouicer, A.Olszewski, R.Pak, I.C.Park, H.Pernegger, C.Reed, L.P.Remsberg, M.Reuter, C.Roland, G.Roland, L.Rosenberg, J.Sagerer, P.Sarin, P.Sawicki, I.Sedykh, W.Skulski, C.E.Smith, P.Steinberg, G.S.F.Stephans, A.Sukhanov, J.-L.Tang, M.B.Tonjes, A.Trzupek, C.Vale, G.J.van Nieuwenhuizen, R.Verdier, G.I.Veres, F.L.H.Wolfs, B.Wosiek, K.Wozniak, A.H.Wuosmaa, B.Wyslouch, J.Zhang

Recent Results from PHOBOS at RHIC

NUCLEAR REACTIONS ¹⁹⁷Au(d, X), (¹⁹⁷Au, X), E(cm)=19.6, 130, 200 GeV/nucleon; measured charged particles pseudorapidity distributions, transverse momentum, yields; deduced nuclear modification factors.

doi: 10.1590/S0103-97332004000500032
Citations: PlumX Metrics

2003BA13      Phys.Rev. C 67, 021901 (2003)

B.B.Back, M.D.Baker, D.S.Barton, R.R.Betts, M.Ballintijn, A.A.Bickley, R.Bindel, A.Budzanowski, W.Busza, A.Carroll, M.P.Decowski, E.Garcia, N.George, K.Gulbrandsen, S.Gushue, C.Halliwell, J.Hamblen, G.A.Heintzelman, C.Henderson, D.J.Hofman, R.S.Hollis, R.Holynski, B.Holzman, A.Iordanova, E.Johnson, J.L.Kane, J.Katzy, N.Khan, W.Kucewicz, P.Kulinich, C.M.Kuo, W.T.Lin, S.Manly, D.McLeod, J.Michalowski, A.C.Mignerey, R.Nouicer, A.Olszewski, R.Pak, I.C.Park, H.Pernegger, C.Reed, L.P.Remsberg, M.Reuter, C.Roland, G.Roland, L.Rosenberg, J.Sagerer, P.Sarin, P.Sawicki, W.Skulski, S.G.Steadman, P.Steinberg, G.S.F.Stephans, M.Stodulski, A.Sukhanov, J.-L.Tang, R.Teng, A.Trzupek, C.Vale, G.J.van Nieuwenhuizen, R.Verdier, B.Wadsworth, F.L.H.Wolfs, B.Wosiek, K.Wozniak, A.H.Wuosmaa, B.Wyslouch

Ratios of charged antiparticles to particles near midrapidity in Au+Au collisions at √s_NN=200 GeV

NUCLEAR REACTIONS ¹⁹⁷Au(¹⁹⁷Au, X), E(cm)=200 GeV/nucleon; measured charged particle/antiparticle yield ratios; deduced baryon chemical potential. Comparison with previous results, model predictions.

doi: 10.1103/PhysRevC.67.021901
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2003BA61      Phys.Rev.Lett. 91, 052303 (2003)

B.B.Back, M.D.Baker, D.S.Barton, R.R.Betts, M.Ballintijn, A.A.Bickley, R.Bindel, A.Budzanowski, W.Busza, A.Carroll, M.P.Decowski, E.Garcia, N.George, K.Gulbrandsen, S.Gushue, C.Halliwell, J.Hamblen, G.A.Heintzelman, C.Henderson, D.J.Hofman, R.S.Hollis, R.Holynski, B.Holzman, A.Iordanova, E.Johnson, J.L.Kane, J.Katzy, N.Khan, W.Kucewicz, P.Kulinich, C.M.Kuo, W.T.Lin, S.Manly, D.McLeod, J.Michalowski, A.C.Mignerey, R.Nouicer, A.Olszewski, R.Pak, I.C.Park, H.Pernegger, C.Reed, L.P.Remsberg, M.Reuter, C.Roland, G.Roland, L.Rosenberg, J.Sagerer, P.Sarin, P.Sawicki, W.Skulski, S.G.Steadman, P.Steinberg, G.S.F.Stephans, M.Stodulski, A.Sukhanov, J.-L.Tang, R.Teng, A.Trzupek, C.Vale, G.J.van Nieuwenhuizen, R.Verdier, B.Wadsworth, F.L.H.Wolfs, B.Wosiek, K.Wozniak, A.H.Wuosmaa, B.Wyslouch

Significance of the Fragmentation Region in Ultrarelativistic Heavy-Ion Collisions

NUCLEAR REACTIONS ¹⁹⁷Au(¹⁹⁷Au, X), E(cm)=19.6, 130, 200 GeV/nucleon; measured charged particle multiplicities, pseudorapidity distributions vs centrality; deduced scaling features. Limiting fragmentation hypothesis.

doi: 10.1103/PhysRevLett.91.052303
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2002BA94      Phys.Rev.Lett. 89, 222301 (2002)

B.B.Back, M.D.Baker, D.S.Barton, R.R.Betts, R.Bindel, A.Budzanowski, W.Busza, A.Carroll, M.P.Decowski, E.Garcia, N.George, K.Gulbrandsen, S.Gushue, C.Halliwell, J.Hamblen, C.Henderson, D.Hofman, R.S.Hollis, R.Holynski, B.Holzman, A.Iordanova, E.Johnson, J.Kane, J.Katzy, N.Khan, W.Kucewicz, P.Kulinich, C.M.Kuo, W.T.Lin, S.Manly, D.McLeod, J.Michalowski, A.Mignerey, R.Nouicer, A.Olszewski, R.Pak, I.C.Park, H.Pernegger, C.Reed, L.P.Remsberg, M.Reuter, C.Roland, G.Roland, L.Rosenberg, J.Sagerer, P.Sarin, P.Sawicki, W.Skulski, S.G.Steadman, P.Steinberg, G.S.F.Stephans, M.Stodulski, A.Sukhanov, J.-L.Tang, R.Teng, A.Trzupek, C.Vale, G.J.van Nieuwenhuizen, R.Verdier, B.Wadsworth, F.L.H.Wolfs, B.Wosiek, K.Wozniak, A.H.Wuosmaa, B.Wyslouch

Pseudorapidity and Centrality Dependence of the Collective Flow of Charged Particles in Au + Au Collisions at √ s_nn = 130 GeV

NUCLEAR REACTIONS ¹⁹⁷Au(¹⁹⁷Au, X), E(cm)=130 GeV/nucleon; measured charged particle collective flow vs centrality, pseudorapidity; deduced reaction mechanism features.

doi: 10.1103/PhysRevLett.89.222301
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2002BA98      Phys.Rev. C 66, 054901 (2002)

B.B.Back, R.R.Betts, J.Chang, W.C.Chang, C.Y.Chi, Y.Y.Chu, J.B.Cumming, J.C.Dunlop, W.Eldredge, S.Y.Fung, R.Ganz, E.Garcia, A.Gillitzer, G.Heintzelman, W.F.Henning, D.J.Hofman, B.Holzman, J.H.Kang, E.J.Kim, S.Y.Kim, Y.Kwon, D.M.McLeod, A.C.Mignerey, M.Moulson, V.Nanal, C.A.Ogilvie, R.Pak, A.Ruangma, D.E.Russ, R.K.Seto, R.K.Seto, P.J.Stanskas, G.S.F.Stephans, H.Q.Wang, F.L.H.Wolfs, A.H.Wuosmaa, H.Xiang, G.H.Xu, H.B.Yao, C.M.Zou, and the E917 Collaboration

Proton emission in Au+Au collisions at 6, 8, and 10.8 GeV/nucleon

NUCLEAR REACTIONS ¹⁹⁷Au(¹⁹⁷Au, X), E=6, 8, 10.8 GeV/nucleon; measured proton yields, transverse mass spectra, rapidity; deduced source features. Thermal source plus longitudinal expansion model.

doi: 10.1103/PhysRevC.66.054901
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2001BA22      J.Phys.(London) G27, 301 (2001)

B.B.Back, R.R.Betts, J.Chang, W.C.Chang, C.Y.Chi, Y.Y.Chu, J.B.Cumming, J.C.Dunlop, W.Eldredge, S.Y.Fung, R.Ganz, E.Garcia, A.Gillitzer, G.Heintzelman, W.Henning, D.J.Hofman, B.Holzman, J.H.Kang, E.J.Kim, S.Y.Kim, Y.Kwon, D.McLeod, A.Mignerey, M.Moulson, V.Nanal, C.A.Ogilvie, R.Pak, A.Ruangma, D.Russ, R.Seto, J.Stanskas, G.S.F.Stephans, H.Wang, F.Wolfs, A.H.Wuosmaa, H.Xiang, G.Xu, H.Yao, C.Zou, for the E917 Collaboration

Strangeness Production in Au + Au Collisions at AGS Energies

NUCLEAR REACTIONS ¹⁹⁷Au(¹⁹⁷Au, X), E=6, 8, 10.8 GeV/nucleon; measured proton spectra, rapidity, pion and kaon spectra; deduced strangeness production enhancement relative to pp-collisions.

doi: 10.1088/0954-3899/27/3/307
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1999AH07      Phys.Rev. C60, 064601 (1999)

I.Ahmad, S.M.Austin, B.B.Back, R.R.Betts, F.P.Calaprice, K.C.Chan, A.Chishti, C.M.Conner, R.W.Dunford, J.D.Fox, S.J.Freedman, M.Freer, S.B.Gazes, A.L.Hallin, Th.Happ, D.Henderson, N.I.Kaloskamis, E.Kashy, W.Kutschera, J.Last, C.J.Lister, M.Liu, M.R.Maier, D.M.Mercer, D.Mikolas, P.A.A.Perera, M.D.Rhein, D.E.Roa, J.P.Schiffer, T.A.Trainor, P.Wilt, J.S.Winfield, M.Wolanski, F.L.H.Wolfs, A.H.Wuosmaa, A.R.Young, J.E.Yurkon

Positron-Electron Pairs Produced in Heavy-Ion Collisions

NUCLEAR REACTIONS ²³²Th(²³⁸U, X), E=5.95 MeV/nucleon; ¹⁸¹Ta(²³⁸U, X), E=5.95, 6.1, 6.3 MeV/nucleon; measured positron, electron spectra, multiplicities, e^-e⁺-coin, angular correlation; deduced no sharp structure in sum-energy spectra. APEX spectrometer.

doi: 10.1103/PhysRevC.60.064601
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1998AC02      Nucl.Phys. A630, 442c (1998)

D.Ackermann, B.B.Back, R.R.Betts, M.Carpenter, L.Corradi, S.M.Fischer, R.Ganz, S.Gil, G.Hackman, D.J.Hofman, R.V.F.Janssens, T.L.Khoo, G.Montagnoli, V.Nanal, F.Scarlassara, M.Schlapp, D.Seweryniak, A.M.Stefanini, A.H.Wuosmaa

Spin Distributions for ⁶⁴Ni + ¹⁰⁰Mo with the Argonne/Notre Dame BGO-Array

NUCLEAR REACTIONS ¹⁰⁰Mo(⁶⁴Ni, X), E=230, 246, 260 MeV; measured γ multiplicities; deduced spin distributions, fusion barrier features. BGO detector array.

doi: 10.1016/S0375-9474(97)00783-5
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1998WU02      Phys.Rev. C57, R2794 (1998)

A.H.Wuosmaa, C.M.Conner, I.Ahmad, B.B.Back, R.R.Betts, R.W.Dunford, S.M.Fischer, R.Ganz, J.P.Greene, N.I.Kaloskamis, L.Lamm, C.J.Lister, V.Nanal, D.E.Roa, J.P.Schiffer

Positron-Electron Angular Correlations in Internal Pair Conversion

RADIOACTIVITY ⁹⁰Y(β^-); ^206,207Bi(EC); measured e⁺e^--coin, sum energy spectra, opening angle correlations from internal pair conversion in daughter nuclei. ⁹⁰Zr, ^206,207Pb deduced transitions internal pair conversion coefficients.

doi: 10.1103/PhysRevC.57.R2794
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1997AC04      J.Phys.(London) G23, 1167 (1997)

D.Ackermann, B.B.Back, R.R.Betts, M.Carpenter, L.Corradi, S.M.Fischer, R.Ganz, S.Gil, G.Hackman, D.J.Hofman, R.V.F.Janssens, T.L.Khoo, G.Montagnoli, V.Nanal, F.Scarlassara, M.Schlapp, D.Seweryniak, A.M.Stefanini, A.H.Wuosmaa

Spin Distributions-Another Approach for Experimentally Probing the Fusion Barrier Distribution

NUCLEAR REACTIONS ¹⁰⁰Mo(⁶⁴Ni, X), E=230, 246, 260 MeV; measured γ multiplicity; ¹¹⁰Pd(³²S, 4n), E not given; measured Eγ, Iγ, γ multiplicity; deduced spin distribution fission channel dependence.

doi: 10.1088/0954-3899/23/10/003
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1997AH01      Phys.Rev.Lett. 78, 618 (1997)

I.Ahmad, S.M.Austin, B.B.Back, R.R.Betts, F.P.Calaprice, K.C.Chan, A.Chishti, C.Conner, R.W.Dunford, J.D.Fox, S.J.Freedman, M.Freer, S.B.Gazes, A.L.Hallin, T.Happ, D.Henderson, N.I.Kaloskamis, E.Kashy, W.Kutschera, J.Last, C.J.Lister, M.Liu, M.R.Maier, D.J.Mercer, D.Mikolas, P.A.A.Perera, M.D.Rhein, D.E.Roa, J.P.Schiffer, T.A.Trainor, P.Wilt, J.S.Winfield, M.R.Wolanski, F.L.H.Wolfs, A.H.Wuosmaa, G.Xu, A.Young, J.E.Yurkon, and the APEX Collaboration

Search for Monoenergetic Positron Emission from Heavy-Ion Collisions at Coulomb-Barrier Energies

NUCLEAR REACTIONS ¹⁸¹Ta(²³⁸U, X), E=5.95-6.3 MeV/nucleon; ²³²Th(²³⁸U, X), E=5.95 MeV/nucleon; measured positron energy spectra; deduced no structure.

doi: 10.1103/PhysRevLett.78.618
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1997AH04      Phys.Rev. C55, R2755 (1997)

I.Ahmad, S.M.Austin, B.B.Back, R.R.Betts, F.P.Calaprice, K.C.Chan, A.A.Chishti, C.Conner, R.W.Dunford, J.D.Fox, S.J.Freedman, M.Freer, J.S.Greenberg, S.B.Gazes, A.L.Hallin, T.Happ, D.Henderson, N.I.Kaloskamis, E.Kashy, W.Kutschera, J.Last, C.J.Lister, M.Liu, M.R.Maier, D.J.Mercer, D.Mikolas, P.A.A.Perera, M.D.Rhein, D.E.Roa, J.P.Schiffer, T.A.Trainor, P.Wilt, J.S.Winfield, M.Wolanski, F.L.H.Wolfs, A.H.Wuosmaa, G.Xu, A.Young, J.E.Yurkon, and the APEX Collaboration

Internal Pair Conversion in Heavy Nuclei

NUCLEAR REACTIONS ²⁰⁶Pb(²⁰⁶Pb, X), E=5.90 MeV/nucleon; measured e⁺e^--sum energy spectra, Doppler corrected Eγ; deduced internal pair conversion to gamma branching ratio. ²³²Th(²⁰⁸Pb, X), E=5.80 MeV/nucleon; ²³⁸U(²⁰⁸Pb, X), E=5.80 MeV/nucleon; ¹⁸¹Ta(²³⁸U, X), E=5.95 MeV/nucleon; ²³²Th(²³⁸U, X), E=5.90 MeV/nucleon; measured e⁺e^--sum energy, Doppler corrected Eγ; deduced no discrete lines evidence in e⁺e^- spectra. ²³⁸U deduced new levels evidence.

doi: 10.1103/PhysRevC.55.R2755
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1997AH05      Z.Phys. A358, 235 (1997)

I.Ahmad, S.M.Austin, B.B.Back, R.R.Betts, F.P.Calaprice, K.C.Chan, A.Chishti, P.Chowdhury, C.Conner, R.W.Dunford, J.D.Fox, S.J.Freedman, M.Freer, S.B.Gazes, A.L.Hallin, T.Happ, D.Henderson, N.I.Kaloskamis, E.Kashy, W.Kutschera, J.Last, C.J.Lister, M.Liu, M.R.Maier, D.J.Mercer, D.Mikolas, P.A.A.Perera, M.D.Rhein, D.E.Roa, J.P.Schiffer, T.A.Trainor, P.Wilt, J.S.Winfield, M.Wolanski, F.L.H.Wolfs, A.H.Wuosmaa, A.Young, J.E.Yurkon, and the APEX Collaboration

The Positron-Electron Peak Puzzle: Results from APEX

NUCLEAR REACTIONS ²³²Th(²³⁸U, X), E=5.78-5.95 MeV/nucleon; ¹⁸¹Ta(²³⁸U, X), E=5.79-6.3 MeV/nucleon; measured total (e⁺)(heavy-ion)-, (e⁺e^-)(heavy-ion)-coin events number; deduced very low light neutral particle production upper limits.

doi: 10.1007/s002180050316
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1997BE79      Nuovo Cim. 110A, 975 (1997)

R.R.Betts

Challenges in Nuclear Molecular Physics

doi: 10.1007/BF03035935
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1996AH05      Acta Phys.Pol. B27, 387 (1996)

I.Ahmad, S.M.Austin, B.B.Back, R.R.Betts, F.P.Calaprice, K.C.Chan, A.Chishti, P.Chowdhury, C.Conner, R.W.Dunford, J.D.Fox, S.J.Freedman, M.Freer, S.Gazes, A.L.Hallin, T.Happ, N.Kaloskamis, E.Kashy, W.Kutschera, J.Last, C.J.Lister, M.Liu, M.R.Maier, D.J.Mercer, D.Mikolas, A.Perera, M.D.Rhein, D.E.Roa, J.P.Schiffer, T.Trainor, P.Wilt, J.S.Winfield, M.Wolanski, F.L.H.Wolfs, A.H.Wuosmaa, A.Young, J.E.Yurkon, and the APEX Collaboration

The Positron Peak Puzzle - Recent Results from APEX

NUCLEAR REACTIONS ²³²Th(²³⁸U, X), E=5.95 MeV/nucleon; ¹⁸¹Ta(²³⁸U, X), E=5.96-6.3 MeV/nucleon; ²⁰⁶Pb(²⁰⁶Pb, X), E not given; analyzed e⁺e^--sum energy spectra. ²³²Th, ²³⁸U(²⁰⁸Pb, X), E=5.8 MeV/nucleon; ²³²Th, ¹⁸¹Ta(²³⁸U, X), E=5.95 MeV/nucleon; ²⁰⁶Pb(²⁰⁶Pb, X), E=5.9 MeV/nucleon; analyzed Doppler reconstructed γ spectra; deduced limits on 1.78 MeV ²³⁸U transition possible contribution to (heavy ion)γ-coin.

1996AH07      Nucl.Instrum.Methods Phys.Res. A370, 539 (1996)

I.Ahmad, S.M.Austin, B.B.Back, R.R.Betts, F.P.Calaprice, K.C.Chan, A.Chishti, P.Chowdhury, C.Conner, R.W.Dunford, J.D.Fox, S.J.Freedman, M.Freer, S.B.Gazes, J.S.Greenberg, J.P.Greene, A.L.Hallin, Th.Happ, D.Henderson, N.I.Kaloskamis, E.Kashy, W.Kutschera, J.Last, C.J.Lister, M.Liu, M.R.Maier, D.M.Mercer, D.Mikolas, P.A.A.Perera, M.D.Rhein, D.E.Roa, J.P.Schiffer, T.A.Trainor, P.Wilt, J.S.Winfield, M.Wolanski, F.L.H.Wolfs, A.H.Wuosmaa, G.Xu, A.R.Young, J.E.Yurkon

A Solenoidal Spectrometer for Positron-Electron Pairs Produced in Heavy-Ion Collisions

RADIOACTIVITY ⁸⁵Sr(EC); ¹¹³Sn(EC); ²⁰³Hg(β^-); measured electron spectra; deduced apparatus response, efficiency. New solenoidal spectrometer.

NUCLEAR REACTIONS ¹⁸¹Ta(²³⁸U, X), E=6.1 MeV/nucleon; measured γ-, positron energy spectra. New solenoidal spectrometer.

doi: 10.1016/0168-9002(95)00829-2
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1996FA14      Phys.Rev. C54, 1249 (1996)

K.A.Farrar, S.J.Sanders, A.K.Dummer, A.T.Hasan, F.W.Prosser, B.B.Back, I.G.Bearden, R.R.Betts, M.P.Carpenter, B.Crowell, M.Freer, D.J.Henderson, R.V.F.Janssens, T.L.Khoo, T.Lauritsen, Y.Liang, D.Nisius, A.H.Wuosmaa, C.Beck, R.M.Freeman, Sl.Cavallaro, A.Szanto de Toledo

Fission Decay of ⁴⁸Cr at E(*)(CN) ≈ 60 MeV

NUCLEAR REACTIONS ¹²C(³⁶Ar, X), ²⁸Si(²⁰Ne, X), ²⁴Mg(²⁴Mg, X), E(cm)=47, 45.5, 44.4 MeV; measured Eγ, Iγ, (particle)(particle)γ-coin; deduced σ(A) for fission, evaporation residues. ⁴⁸Ca deduced spin distribution, fission decay features.

doi: 10.1103/PhysRevC.54.1249
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1996WU11      Phys.Rev. C54, 2463 (1996)

A.H.Wuosmaa, B.B.Back, R.R.Betts, M.Freer, B.G.Glagola, D.J.Henderson, D.J.Hofman, V.Nanal

Resonance Spin Assignments in ¹²C + ¹²C(3^-) Inelastic Scattering from Angular Correlation Methods

NUCLEAR REACTIONS ¹²C(¹²C, ¹²C'), E(cm)=29.5-37.5 MeV; measured σ(E, θ(¹²C), θα), α(particle)(θ); deduced resonance, J, π. Silicon strip detectors.

doi: 10.1103/PhysRevC.54.2463
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1995AH01      Nucl.Phys. A583, 247c (1995)

I.Ahmad, S.M.Austin, B.B.Back, D.Bazin, R.R.Betts, F.P.Calaprice, K.C.Chan, A.Chishti, P.Chowdhury, R.W.Dunford, J.D.Fox, S.J.Freedman, M.Freer, S.B.Gazes, J.S.Greenberg, A.L.Hallin, T.Happ, J.Last, N.Kaloskamis, E.Kashy, W.Kutschera, C.J.Lister, M.Liu, M.R.Maier, D.Mercer, A.Perera, M.D.Rhein, D.E.Roa, J.P.Schiffer, T.Trainor, P.Wilt, J.S.Winfield, M.Wolanski, F.L.H.Wolfs, A.H.Wuosmaa, G.Xu, A.Young, J.E.Yurkon

Positron Production in Heavy Ion Collisions: Current status of the problem

NUCLEAR REACTIONS ¹⁸¹Ta(²³⁸U, X), E=5.9-6.3 MeV/nucleon; compiled, analyzed, reviewed electron, positron production data.

doi: 10.1016/0375-9474(94)00667-C
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1995AH06      Phys.Rev.Lett. 75, 2658 (1995)

I.Ahmad, S.M.Austin, B.B.Back, R.R.Betts, F.P.Calaprice, K.C.Chan, A.Chishti, P.Chowdhury, C.Conner, R.W.Dunford, J.D.Fox, S.J.Freedman, M.Freer, S.B.Gazes, A.L.Hallin, T.Happ, D.Henderson, N.I.Kaloskamis, E.Kashy, W.Kutschera, J.Last, C.J.Lister, M.Liu, M.R.Maier, D.J.Mercer, D.Mikolas, P.A.A.Perera, M.D.Rhein, D.E.Roa, J.P.Schiffer, T.A.Trainor, P.Wilt, J.S.Winfield, M.Wolanski, F.L.H.Wolfs, A.H.Wuosmaa, G.Xu, A.Young, J.E.Yurkon, and the APEX Collaboration

Search for Narrow Sum-Energy Lines in Electron-Positron Pair Emission from Heavy-Ion Collisions Near the Coulomb Barrier

NUCLEAR REACTIONS ¹⁸¹Ta(²³⁸U, X), E=5.95-6.3 MeV/nucleon; ²³²Th(²³⁸U, X), E=5.95 MeV/nucleon; measured pair emission sum spectra; deduced no sharp lines evidence, neutral particle isolated decay related features.

doi: 10.1103/PhysRevLett.75.2658
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1995BA08      Phys.Rev. C51, 1961 (1995)

S.P.Barrow, R.W.Zurmuhle, J.T.Murgatroyd, N.G.Wimer, Y.Miao, K.R.Pohl, A.H.Wuosmaa, R.R.Betts, M.Freer, B.Glagola

Excitation Functions of the ²⁰Ne + ²⁰Ne System

NUCLEAR REACTIONS ²⁰Ne(²⁰Ne, ²⁰Ne), (²⁰Ne, ²⁰Ne'), (²⁰Ne, X), E(cm)=30.6-37.4 MeV; measured σ(θ) vs E; deduced quasimolecular resonances excitation related features.

doi: 10.1103/PhysRevC.51.1961
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1995BE33      Acta Phys.Pol. B26, 487 (1995)

R.R.Betts

Low-Energy Nuclear Physics with High-Segmentation Silicon Arrays

NUCLEAR REACTIONS ¹²C(¹²C, X), E(cm)=32, 36 MeV; ¹²C(¹²C, ¹²C), E(cm)=26.68 MeV; compiled, reviewed data, analyses; deduced high-segmentation Si arrays versatility.

RADIOACTIVITY ⁹⁰Y(β^-); ¹¹³Sn(EC); compiled, reviewed data, analyses; deduced high-segmentation Si arrays versatility.

1995FR10      Nucl.Phys. A587, 36 (1995)

M.Freer, R.R.Betts, A.H.Wuosmaa

Relationship between the Deformed Harmonic Oscillator and Clustering in Light Nuclei

NUCLEAR STRUCTURE ⁸Be, ¹²C, ²⁰Ne, ²⁴Mg, ³²S, ³⁶Ar, ⁵⁶Ni, ⁴⁸Cr, ⁷²Kr, ⁸⁰Zr, ⁹⁶Cd; calculated harmonic oscillator configuration contour density plots at 2:1, 3:1 axial deformations; deduced deformed harmonic oscillator, clustering relationship.

doi: 10.1016/0375-9474(94)00820-D
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1994FR05      Phys.Rev. C49, R1751 (1994)

M.Freer, A.H.Wuosmaa, R.R.Betts, D.J.Henderson, P.Wilt, R.W.Zurmuhle, D.P.Balamuth, S.Barrow, D.Benton, Q.Li, Z.Liu, Y.Miao

Limits for the 3α Branching Ratio of the Decay of the 7.65 MeV, 0⁺ State in ¹²C

NUCLEAR REACTIONS ¹²C(¹²C, 3α), E=58 MeV; measured 3α relative energy spectra. ¹²C level deduced three-body decay Γα.

doi: 10.1103/PhysRevC.49.R1751
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1994HA03      Phys.Rev. C49, 1031 (1994)

A.T.Hasan, S.J.Sanders, K.A.Farrar, F.W.Prosser, B.B.Back, R.R.Betts, M.Freer, D.J.Henderson, R.V.F.Janssens, A.H.Wuosmaa, A.Szanto de Toledo

Heavy-Ion Resonance and Statistical Fission Competition in the ²⁴Mg + ²⁴Mg System at E(c.m.) = 44.4 MeV

NUCLEAR REACTIONS ²⁴Mg(²⁴Mg, F), (²⁴Mg, X), E(cm)=44.4 MeV; measured fission fragment, evaporation residue σ(θ). ⁴⁸Cr deduced fission characteristics.

doi: 10.1103/PhysRevC.49.1031
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1994ME24      Nucl.Instrum.Methods Phys.Res. A350, 491 (1994)

D.J.Mercer, D.Mikolas, J.Yurkon, S.M.Austin, D.Bazin, S.Gaff, E.Kashy, D.Kataria, J.S.Winfield, R.R.Betts, D.J.Henderson, A.L.Hallin, M.Liu, F.L.H.Wolfs

A Large Solid-Angle Array for Heavy Ions from APEX

NUCLEAR REACTIONS ⁵⁸Ni(⁵⁸Ni, ⁵⁸Ni), E=200 MeV; measured σ(θ). ¹⁸¹Ta(²³⁸U, X), E=1.45 GeV; measured fragment tof, mass spectra. Large solid-angle array of low pressure multi-wire proportional counters. Other reactions studied.

doi: 10.1016/0168-9002(94)91249-1
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1994SA04      Phys.Rev. C49, 1016 (1994)

S.J.Sanders, A.Hasan, F.W.Prosser, B.B.Back, R.R.Betts, M.P.Carpenter, D.J.Henderson, R.V.F.Janssens, T.L.Khoo, E.F.Moore, P.R.Wilt, F.L.H.Wolfs, A.H.Wuosmaa, K.B.Beard, Ph.Benet

Selective Population of States in Fission Fragments from the ³²S + ²⁴Mg Reaction

NUCLEAR REACTIONS ²⁴Mg(³²S, F), E=120.9, 129 MeV; ²⁴Mg(³²S, ²⁴Mg), E(cm)=51, 54.5 MeV; measured fission, reaction (particle)(particle)γ-, particle(γ)-, (particle)(particle)-coin; deduced selective population of ²⁸Si states in ⁵⁶Ni fission. Statistical model.

doi: 10.1103/PhysRevC.49.1016
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1994WU07      Phys.Rev. C50, 2909 (1994)

A.H.Wuosmaa, M.Freer, B.B.Back, R.R.Betts, J.C.Gehring, B.G.Glagola, Th.Happ, D.J.Henderson, P.Wilt, I.G.Bearden

Angular-Distribution Measurements for ¹²C(¹²C, ¹²C[0⁺₂])¹²C(0⁺₂) Inelastic Scattering

NUCLEAR REACTIONS ¹²C(¹²C, ¹²C'), E(cm)=29.5-35.5 MeV; measured σ(θ); deduced structure features, dominant l.

doi: 10.1103/PhysRevC.50.2909
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1994WU11      Nucl.Instrum.Methods Phys.Res. A345, 482 (1994)

A.H.Wuosmaa, P.Wilt, B.B.Back, R.R.Betts, M.Freer, B.G.Glagola, Th.Happ, D.J.Henderson, I.G.Bearden, R.W.Zurmuhle, D.P.Balamuth, S.Barrow, D.Benton, Q.Li, Z.Liu, Y.Miao

Instrumentation of Double-Sided Silicon Strip Detectors for Multi-Particle Detection

NUCLEAR REACTIONS ¹²C(¹²C, ⁸Be), E ≈ 58 MeV; analyzed data; deduced 2α-, 3α-excitation spectra, two-body (Q-value) spectra. Double-sided Si strip detectors, compact, modular, low-cost, high density readout system.

doi: 10.1016/0168-9002(94)90503-7
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1993EV03      Nucl.Instrum.Methods Phys.Res. A326, 136 (1993)

L.Evensen, A.Hanneborg, T.Happ, A.H.Wuosmaa, R.R.Betts

A Fast Low Noise Silicon Detector for Electron Spectroscopy up to 1 MeV

RADIOACTIVITY ²⁰⁷Bi(EC), (β⁺); ¹³⁴Cs(EC), (β^-); measured electron spectra. Fast low noise silicon detector.

doi: 10.1016/0168-9002(93)90343-G
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1993WU01      Nucl.Phys. A553, 563c (1993)

A.H.Wuosmaa, B.B.Back, I.G.Bearden, R.R.Betts, M.Freer, J.Gehring, B.G.Glagola, Th.Happ, D.J.Henderson, P.Wilt

Evidence for Alpha-Particle Chain Configurations in ²⁴Mg

NUCLEAR REACTIONS ¹²C(¹²C, ¹²C'), E=52-80 MeV; measured σ(θ). ²⁴Mg deduced α-clustering configuration evidence.

doi: 10.1016/0375-9474(93)90660-P
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1992WU02      Phys.Rev.Lett. 68, 1295 (1992)

A.H.Wuosmaa, R.R.Betts, B.B.Back, M.Freer, B.G.Glagola, Th.Happ, D.J.Henderson, P.Wilt, I.G.Bearden

Evidence for Alpha-Particle Chain Configurations in ²⁴Mg

NUCLEAR REACTIONS ¹²C(¹²C, ¹²C'), E=52-80 MeV; measured σ(θ) vs E, αα-coin. ²⁴Mg deduced structure, α-particle chain configuration evidence, deformation features.

doi: 10.1103/PhysRevLett.68.1295
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1991BE27      Nucl.Phys. A534, 445 (1991)

S.J.Bennett, M.Freer, B.R.Fulton, J.T.Murgatroyd, P.J.Woods, S.C.Allcock, W.D.M.Rae, A.E.Smith, J.S.Lilley, R.R.Betts

Symmetric and Near-Symmetric Fission of ²⁴Mg, ²⁸Si and ³²S

NUCLEAR REACTIONS ¹²C(²⁸Si, F), (²⁸Si, X), (³²S, F), (³²S, X), E=200 MeV; ¹²C(²⁴Mg, F), (²⁴Mg, X), E=180 MeV; measured fission, reaction (fragment)(fragment)-coin; deduced reaction mechanism. ²⁴Mg, ²⁸Si, ³²S deduced fission characteristics.

doi: 10.1016/0375-9474(91)90511-4
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1991EV02      Nucl.Phys. A526, 365 (1991)

P.M.Evans, A.E.Smith, C.N.Pass, L.Stuttge, B.B.Back, R.R.Betts, B.K.Dichter, D.J.Henderson, S.J.Sanders, F.Videbaek, B.D.Wilkins

Dissipative Reaction Mechanisms in Medium-Mass Nuclear Collisions

NUCLEAR REACTIONS ⁴⁰Ca(⁴⁰Ca, X), E=197, 231 MeV; measured fragment mass, charge distributions, σ(θ), strongly damped σ. Finite-range liquid drop model calculations, fast fission, asymmetric fission interpretations.

doi: 10.1016/0375-9474(91)90291-D
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1991FU03      J.Phys.(London) G17, 555 (1991)

B.R.Fulton, S.J.Bennett, M.Freer, J.T.Murgatroyd, S.C.Allcock, W.D.M.Rae, A.E.Smith, R.R.Betts, B.B.Back, S.Sanders, F.Videbaek

Search for Large Cluster Breakup of ⁴⁰Ca

NUCLEAR REACTIONS ¹²C(⁴⁰Ca, ¹²CX), E=300 MeV; measured total energy spectra following projectile breakup. ¹²C(²⁴Mg, 2¹²C), E not given; analyzed total energy spectra following projectile breakup; deduced no large cluster ⁴⁰Ca breakup evidence.

doi: 10.1088/0954-3899/17/4/014
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1991GE03      Phys.Rev. C44, R1 (1991)

J.C.Gehring, B.B.Back, R.R.Betts, P.B.Fernandez, D.J.Henderson, Y.Nagame

Proton-Induced Fission of ²³⁸U at Extreme Sub-Barrier Energies

NUCLEAR REACTIONS, ICPND ²³⁸U(p, F), E=3-4.45 MeV; measured fission σ(E).

doi: 10.1103/PhysRevC.44.R1
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1991WU06      Phys.Lett. 263B, 23 (1991)

A.H.Wuosmaa, R.R.Betts, B.B.Back, M.P.Carpenter, H.Esbensen, P.B.Fernandez, B.G.Glagola, Th.Happ, R.V.F.Janssens, T.L.Khoo, E.F.Moore, F.Scarlassara, Ph.Benet

Gamma-Ray Multiplicity Distributions in ¹⁶O + ¹⁵²Sm Fusion Near and Below the Coulomb Barrier

NUCLEAR REACTIONS, ICPND ¹⁵²Sm(¹⁶O, X), E=60-80 MeV; measured γ-multiplicity, σ(evaporation residue θ); calculated fusion σ(E). Coupled-channels model, deformation effects.

doi: 10.1016/0370-2693(91)91701-V
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1990AH01      Nucl.Instrum.Methods Phys.Res. A299, 201 (1990)

I.Ahmad, R.R.Betts, T.Happ, D.J.Henderson, F.L.H.Wolfs, A.H.Wuosmaa

Nuclear Spectroscopy with Si PIN Diode Detectors at Room Temperature

RADIOACTIVITY ⁵⁷Co, ²⁴¹Am; measured α-spectra. ²⁰³Hg; measured electron spectra. ²³⁸Pu; measured α-spectra; deduced detector resolution. Si PIN diode detectors.

doi: 10.1016/0168-9002(90)90776-3
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1989EV02      Phys.Lett. 229B, 25 (1989)

P.M.Evans, A.E.Smith, C.N.Pass, L.Stuttge, R.R.Betts, S.J.Sanders, B.B.Back, B.K.Dichter, D.J.Henderson, F.Videbaek, B.D.Wilkins

Damped Reactions in Medium Mass Nuclei

NUCLEAR REACTIONS ⁴⁰Ca(⁴⁰Ca, X), E=197, 231 MeV; ⁵⁰Cr(²⁸Si, X), E=150 MeV; measured σ(fragment θ) vs mass, charge; deduced reaction mechanism.

doi: 10.1016/0370-2693(89)90148-2
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1989PA07      Nucl.Phys. A499, 173 (1989)

C.N.Pass, P.M.Evans, A.E.Smith, L.Stuttge, R.R.Betts, J.S.Lilley, D.W.Banes, K.A.Connell, J.Simpson, J.R.Smith, A.N.James, B.R.Fulton

Study of Neutron Transfer Reactions at Sub-Coulomb Energies Using a Recoil Separator

NUCLEAR REACTIONS ^{116,118,120,122,124}Sn(⁵⁸Ni, X), (⁵⁸Ni, ⁵⁹Ni), E=180-220 MeV; measured σ(θ=180°) vs E, γγ-coin; deduced pickup σ. ¹²³Sn levels deduced neutron pickup strength. One neutron pick-up gamma-ray coincidences. DWBA, semi-classical analyses, sub-barrier fusion calculations.

doi: 10.1016/0375-9474(89)90276-5
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1988SA05      Phys.Rev. C37, 1318 (1988)

S.J.Sanders, B.B.Back, R.R.Betts, D.Henderson, R.V.F.Janssens, K.E.Rehm, F.Videbaek

⁴⁸Ti + ¹⁰⁴Ru Single-Nucleon Transfer at the Barrier

NUCLEAR REACTIONS ¹⁰⁴Ru(⁴⁸Ti, ⁴⁹Ti), E=161.8 MeV; measured σ(θ); deduced transfer probability vs closest approach reduced distance. DWBA analysis.

doi: 10.1103/PhysRevC.37.1318
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1987BE28      Phys.Rev.Lett. 59, 978 (1987)

R.R.Betts, P.M.Evans, C.N.Pass, N.Poffe, A.E.Smith, L.Stuttge, J.S.Lilley, D.W.Banes, K.A.Connell, J.Simpson, J.R.H.Smith, A.N.James, B.R.Fulton

Measurement of Subbarrier Transfer Reactions for ⁵⁸Ni + Sn using a Recoil Mass Separator

NUCLEAR REACTIONS ^{116,118,120,122,124}Sn(⁵⁸Ni, X), E=183-220 MeV; measured σ(E, θ=180°); deduced one-nucleon pickup σ(θ), target mass dependence.

doi: 10.1103/PhysRevLett.59.978
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1987DI02      Phys.Rev. C35, 1304 (1987)

B.K.Dichter, P.D.Parker, S.J.Sanders, R.R.Betts, S.Saini

Search for Shape Isomers in ⁵⁶Ni

NUCLEAR REACTIONS ⁴⁰Ca(¹⁶O, ²⁸Si), E=74.925-77.25 MeV; measured σ(θ), Q, σ(E). ⁵⁶Ni deduced resonances, Γ. Other data input.

doi: 10.1103/PhysRevC.35.1304
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1987SA05      Phys.Lett. 185B, 316 (1987)

S.Saini, R.R.Betts, R.W.Zurmuhle, P.H.Kutt, B.K.Dichter

Correlated Intermediate Structures in the Elastic-Inelastic Scattering and α-Transfer Channels of ²⁴Mg + ²⁴Mg

NUCLEAR REACTIONS ²⁴Mg(²⁴Mg, ²⁰Ne), (²⁴Mg, ²⁴Mg), (²⁴Mg, ²⁴Mg'), E=89.72-95.52 MeV; measured σ(E). ⁴⁸Cr deduced resonances, Γ, Γα/Γ, other parameters. Position sensitive detectors. Enriched target.

doi: 10.1016/0370-2693(87)91006-9
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1987WU07      Phys.Rev. C36, 1011 (1987)

A.H.Wuosmaa, S.Saini, P.H.Kutt, S.F.Pate, R.W.Zurmuhle, R.R.Betts

Resonance Behavior in the ²⁴Mg + ²⁸Si System

NUCLEAR REACTIONS ²⁸Si(²⁴Mg, ²⁴Mg), (²⁴Mg, ²⁴Mg'), E=90.95-106.25 MeV; measured σ(θ) vs E; deduced model parameters, resonance structure, Γ, (Γ(elastic)/Γ). Statistical fluctuation analysis.

doi: 10.1103/PhysRevC.36.1011
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1986FU07      Phys.Lett. 181B, 233 (1986)

B.R.Fulton, S.J.Bennett, C.A.Ogilvie, J.S.Lilley, D.W.Banes, W.D.M.Rae, S.C.Allcock, R.R.Betts, A.E.Smith

Symmetric Fission of ²⁴Mg following Inelastic Scattering

NUCLEAR REACTIONS ¹²C(²⁴Mg, 2¹²C), (²⁴Mg, ¹⁶O⁸Be), ⁴He(²⁴Mg, ¹⁶O), E=180 MeV; measured total energy spectrum. ²⁴Mg deduced symmetric fission. ΔE-E telescopes, coincidence method.

doi: 10.1016/0370-2693(86)90038-9
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1986SA25      Phys.Rev. C34, 1746 (1986)

S.J.Sanders, R.R.Betts, I.Ahmad, K.T.Lesko, S.Saini, B.D.Wilkins, F.Videbaek, B.K.Dichter

Fission-Like Yields in ¹⁶O + ^40,44Ca Reactions

NUCLEAR REACTIONS ^40,44Ca(¹⁶O, X), E=69.3-87.3 MeV; measured σ(E, θ) vs mass, evaporation residue yields; deduced fusion σ(E). Enriched target, tof. Deep-inelastic scattering calculations.

doi: 10.1103/PhysRevC.34.1746
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1985BA29      Phys.Rev. C32, 195 (1985); Erratum Phys.Rev. C33, 385 (1986)

B.B.Back, R.R.Betts, J.E.Gindler, B.D.Wilkins, S.Saini, M.B.Tsang, C.K.Gelbke, W.G.Lynch, M.A.McMahan, P.A.Baisden

Angular Distributions in Heavy-Ion-Induced Fission

NUCLEAR REACTIONS, ICPND ²⁰⁸Pb, ²³²Th, ²³⁸U, ²⁴⁸Cm(¹⁶O, F), E=85-148 MeV; ²⁰⁸Pb(¹⁹F, F), E=110-190 MeV; ²⁰⁸Pb(²⁴Mg, F), E=140-210 MeV; ²⁰⁸Pb(²⁸Si, F), E=160-260 MeV; ¹⁹⁷Au(³²S, F), E=185-255 MeV; ²⁰⁸Pb(³²S, F), E=180-266 MeV; measured total fission σ(E), σ(θ) vs E. Standard fission theory analysis.

doi: 10.1103/PhysRevC.32.195
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1985KU10      Phys.Lett. 155B, 27 (1985)

P.H.Kutt, S.F.Pate, A.h.Wuosmaa, R.W.Zurmuhle, O.Hansen, R.R.Betts, S.Saini

Energy Dependence of Elastic and Inelastic Scattering of ³²S + ³²S

NUCLEAR REACTIONS ³²S(³²S, ³²S), (³²S, ³²S'), E=122-138 MeV; measured σ(θ) vs E. Optical model analysis.

doi: 10.1016/0370-2693(85)91026-3
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1984AL25      Phys.Rev. C30, 1223 (1984)

H.A.Aljuwair, R.J.Ledoux, M.Beckerman, S.B.Gazes, J.Wiggins, E.R.Cosman, R.R.Betts, S.Saini, O.Hansen

Isotopic Effects in the Fusion of ⁴⁰Ca with ^40,44,48Ca

NUCLEAR REACTIONS, ICPND ^44,48,40Ca(⁴⁰Ca, X), E=90-135 MeV; measured fusion σ(E). Velocity filter.

doi: 10.1103/PhysRevC.30.1223
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1984BA01      Phys.Rev.Lett. 52, 397 (1984)

B.B.Back, R.R.Betts, K.Cassidy, B.G.Glagola, J.E.Gindler, L.E.Glendenin, B.D.Wilkins

Fission Anisotropies and Sequential Fission: A Response

NUCLEAR REACTIONS ²⁰⁸Pb, ²³⁸U(¹⁶O, X), E=80-180 MeV; calculated fission σ(E); deduced sharp cut-off model validity.

doi: 10.1103/PhysRevLett.52.397
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1984GL01      Phys.Rev. C29, 486 (1984)

B.G.Glagola, B.B.Back, R.R.Betts

Effects of Large Angular Momenta on the Fission Properties of Pt Isotopes

NUCLEAR REACTIONS, ICPND ¹⁷⁰Yb(¹⁶O, F), E=90-148 MeV; ^{144,150,152,154}Sm(³²S, F), E=180-230 MeV; measured fission σ(E), fragment total kinetic energy, mass distributions vs E. ^{176,182,184,186}Pt deduced large angular momenta effects on fission. Scission point fission model.

doi: 10.1103/PhysRevC.29.486
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1984SA09      Phys.Rev. C29, 1769 (1984)

S.Saini, R.R.Betts

Statistical Analysis of Excitation Functions for ²⁸Si + ²⁸Si Elastic Scattering and Reactions

NUCLEAR REACTIONS ²⁸Si(²⁸Si, ²⁸Si), (²⁸Si, ²⁸Si'), E=105-121 MeV; measured elastic, inelastic yields, angle integrated σ(E); deduced summed deviation probability densities, cross correlation functions. Statistical analysis.

doi: 10.1103/PhysRevC.29.1769
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1983BA07      Phys.Rev.Lett. 50, 818 (1983)

B.B.Back, R.R.Betts, K.Cassidy, B.G.Glagola, J.E.Gindler, L.E.Glendenin, B.D.Wilkins

Experimental Signatures of Quasifission Reactions

NUCLEAR REACTIONS ²³⁸U(¹⁶O, F), E=90, 110, 130, 148 MeV; ²⁰⁸Pb(³²S, F), E=185, 198, 205, 219, 225 MeV; measured fission fragment σ(θ), absolute total fission σ; deduced quasifission mechanism, rigid to effective moment of inertia ratio. Optical, extra push model analyses.

doi: 10.1103/PhysRevLett.50.818
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1983BE39      Phys.Scr. T5, 204 (1983)

R.R.Betts, S.Saini

High Spin Resonances in Heavy Ion Collisions

NUCLEAR REACTIONS ²⁸Si(²⁸Si, ²⁸Si), E=118 MeV; measured σ(θ). ²⁸Si(²⁸Si, ²⁸Si), (²⁸Si, ²⁸Si'), E=90-150 MeV; measured σ(θ) vs E. ⁵⁶Ni deduced high-spin resonances, Γ, possible fissioning shape isomer character.

doi: 10.1088/0031-8949/1983/T5/041
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1983EL08      Nucl.Phys. A406, 134 (1983)

C.Ellegaard, J.D.Garrett, O.Hansen, S.Y.Van Der Werf, R.R.Betts, S.B.Dicenzo, B.F.Bayman

Study of ^46,48Ca(α, p) Reactions

NUCLEAR REACTIONS ^46,48Ca(α, p), E=25 MeV; measured σ(E(p), θ). ^49,51Sc deduced levels. Enriched targets. DWBA analysis.

doi: 10.1016/0375-9474(83)90288-9
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1983ZU03      Phys.Lett. 129B, 384 (1983)

R.W.Zurmuhle, P.Kutt, R.R.Betts, S.Saini, F.Haas, O.Hansen

Resonances in Elastic and Inelastic Scattering of ²⁴Mg + ²⁴Mg

NUCLEAR REACTIONS ²⁴Mg(²⁴Mg, ²⁴Mg), (²⁴Mg, ²⁴Mg'), E=84-100 MeV; measured σ(θ) vs E. ⁴⁸Cr deduced resonances, Γ(elastic)/Γ.

doi: 10.1016/0370-2693(83)90124-7
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1982AH08      Phys.Rev.Lett. 49, 1758 (1982)

I.Ahmad, J.E.Gindler, R.R.Betts, R.R.Chasman, A.M.Friedman

Possible Ground-State Octupole Deformation in ²²⁹Pa

RADIOACTIVITY ²²⁹Pa(EC), ²²⁹U(EC) [from mass separation]; measured I(ce), Eγ, Iγ, γγ-, γ(X-ray)-, (ce)(X-ray)-coin. ²²⁹Pa deduced levels, J, π, K, γ-multipolarity, ground state doublet splitting, Nilsson assignment.

NUCLEAR REACTIONS ²³¹Pa(p, t), E=16.5 MeV; measured σ(Et). ²²⁹Pa deduced levels, J, π, possible octupole deformation, Nilsson assignment, K.

doi: 10.1103/PhysRevLett.49.1758
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1981BA08      Phys.Rev.Lett. 46, 1068 (1981)

B.B.Back, H.-G.Clerc, R.R.Betts, B.G.Glagola, B.D.Wilkins

Observation of Anisotropy in the Fission Decay of Nuclei with Vanishing Fission Barrier

RADIOACTIVITY ²²⁹Am, ²⁶⁴Sg, ²⁷⁰Hs, ²⁸⁰Cn(SF) [from ¹⁹⁷Au, ²³²Th, ²³⁸U, ²⁴⁸Cm(³²S, X), E=218 MeV;]; measured (fragment)(fragment)(θ); deduced anisotropy, deviation from rotating liquid drop model. ²⁶⁴Sg, ²⁷⁰Hs, ²⁸⁰Cn deduced deformation. Statistical model.

doi: 10.1103/PhysRevLett.46.1068
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1981BE04      Phys.Rev.Lett. 46, 313 (1981)

R.R.Betts, H.-G.Clerc, B.B.Back, I.Ahmad, K.L.Wolf, B.G.Glagola

Selectivity in Two-Particle Exclusive Heavy-Ion Reactions

NUCLEAR REACTIONS ²⁸Si(²⁸Si, X), E=85-150 MeV; measured (fragment)(fragment)-coin; deduced selective excitation of fragment yrast states.

doi: 10.1103/PhysRevLett.46.313
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1981BE11      Phys.Lett. 100B, 117 (1981)

R.R.Betts, S.B.DiCenzo, J.F.Petersen

High Spin Resonances in ²⁸Si + ²⁸Si Scattering

NUCLEAR REACTIONS ²⁸Si(²⁸Si, ²⁸Si), (²⁸Si, ²⁸Si'), E=90-130 MeV; measured σ(E, θ); deduced channel correlation in resonance structure. ⁵⁶Ni deduced high spin resonances.

doi: 10.1016/0370-2693(81)90756-5
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1981BE23      Phys.Rev.Lett. 47, 23 (1981)

R.R.Betts, B.B.Back, B.G.Glagola

Intermediate Structure Resonances in ⁵⁶Ni

NUCLEAR REACTIONS ²⁸Si(²⁸Si, ²⁸Si), (²⁸Si, ²⁸Si'), (²⁸Si, X), E=105-121 MeV; measured σ(E). ⁵⁶Ni deduced resonances, symmetric decay widths. Quasimolecular, fissioning shape isomer interpretation.

doi: 10.1103/PhysRevLett.47.23
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1981DI06      Phys.Rev. C23, 2561 (1981)

S.B.DiCenzo, J.F.Petersen, R.R.Betts

Fusion of ²⁸Si + ²⁸Si

NUCLEAR REACTIONS ²⁸Si(²⁸Si, X), E=80-140 MeV; measured σ(evaporation residue); deduced σ(fusion E). Entrance channel, TDHF, yrast limit models.

doi: 10.1103/PhysRevC.23.2561
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1981JA10      Phys.Rev. C24, 2070 (1981)

C.M.Jachcinski, D.G.Kovar, R.R.Betts, C.N.Davids, D.F.Geesaman, C.Olmer, M.Paul, S.J.Sanders, J.L.Yntema

Fusion of ²⁴Mg + ²⁴Mg

NUCLEAR REACTIONS ²⁴Mg(²⁴Mg, X), E(cm)=24.7-66.2 MeV; measured σ(fusion, E). Activation technique.

doi: 10.1103/PhysRevC.24.2070
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1980BA28      Phys.Rev.Lett. 45, 1230 (1980)

B.B.Back, R.R.Betts, W.Henning, K.L.Wolf, A.C.Mignerey, J.M.Lebowitz

Target Deformation Effects at Large Angular Momenta in Heavy-Ion Fusion

NUCLEAR REACTIONS, Fission ^144,154Sm(³²S, F), E=138-231 MeV; measured total fusion σ(E), fusion σ/fission σ; deduced target deformation effects.

doi: 10.1103/PhysRevLett.45.1230
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1980BE03      Phys.Rev. C21, 175 (1980)

R.R.Betts, M.M.Hindi, S.B.DiCenzo, P.D.Parker

Search for Fusion Oscillations in the ¹⁶O + ²⁸Si System

NUCLEAR REACTIONS ²⁸Si(¹⁶O, X), E=50-65 MeV; measured fragment production σ(E).

doi: 10.1103/PhysRevC.21.175
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1980ER06      Phys.Rev. C22, 507 (1980)

K.A.Erb, R.R.Betts, S.K.Korotky, M.M.Hindi, P.P.Tung, M.W.Sachs, S.J.Willett, D.A.Bromley

Resonant and Average Behavior of the ¹²C+¹²C Total Reaction Cross Section: 5.6≤E(cm)≤10.0 MeV

NUCLEAR REACTIONS ¹²C(¹²C, γ), E=11.8-20 MeV; measured σ(E); deduced total reaction σ. ²⁴Mg deduced resonances, J, π, Γ(¹²C), Γ. Optical model analysis, incoming-wave boundary condition model.

doi: 10.1103/PhysRevC.22.507
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1980MO11      Phys.Rev. C21, 2275 (1980)

M.H.Mortensen, R.R.Betts, C.K.Bockelman

W(p, t) Reactions. I. Even Targets

NUCLEAR REACTIONS ^{186,184,182,180}W(p, t), E=21 MeV; measured σ(Et, θ). ¹⁸⁰W(t, p), E=15 MeV; measured σ(Ep, θ). ^{184,182,180,178}W deduced levels, L, π, J, band structure. DWBA, CCBA analyses.

doi: 10.1103/PhysRevC.21.2275
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1980MO12      Phys.Rev. C21, 2288 (1980)

M.H.Mortensen, R.R.Betts, C.K.Bockelman

W(p, t) Reactions. II. Odd Target

NUCLEAR REACTIONS ¹⁸³W(p, t), E=21 MeV; measured σ(Et, θ). ¹⁸¹W deduced levels, L, π, J, band structure, configuration. DWBA analysis.

doi: 10.1103/PhysRevC.21.2288
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1979BE16      Phys.Rev. C19, 2070 (1979)

R.R.Betts, S.B.DiCenzo

Rotational-Energy Contributions to the Kinetic Energies of Deep-Inelastic Reaction Products

NUCLEAR REACTIONS ³⁵Cl, ²⁰Ne(²⁷Al, X), E=140-170 MeV; calculated deep-inelastic fragment energies; deduced rotational contribution.

doi: 10.1103/PhysRevC.19.2070
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1979BE21      Phys.Rev.Lett. 43, 253 (1979)

R.R.Betts, S.B.DiCenzo, J.F.Petersen

Energy-Dependent Structure in ²⁸Si + ²⁸Si Scattering

NUCLEAR REACTIONS ²⁸Si(²⁸Si, ²⁸Si), (²⁸Si, ²⁸Si'), (²⁸Si, ²⁴Mg), E=80-150 MeV; measured σ(E, θ); deduced reaction mechanism.

doi: 10.1103/PhysRevLett.43.253
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1979FO04      Phys.Rev. C19, 756 (1979)

H.T.Fortune, M.N.I.Al-Jadir, R.R.Betts, J.N.Bishop, R.Middleton

α Spectroscopic Factors in ⁴⁰Ca

NUCLEAR REACTIONS ³⁶Ar(⁶Li, d), E=17.0 MeV; measured σ(Ed, θ). ⁴⁰Ca levels deduced Sα. DWBA analysis. Enriched gas target.

doi: 10.1103/PhysRevC.19.756
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1979MI01      Phys.Rev. C19, 100 (1979)

R.Middleton, R.R.Betts, H.T.Fortune, R.G.Stokstad

Energy-Averaged Angular Distributions for ¹⁶O + ¹²C → α + ²⁴Mg

NUCLEAR REACTIONS ¹⁶O(¹²C, α), E=22.5-25.5 MeV; ¹²C(¹⁶O, α), E=30-34 MeV; measured σ(Eα, θ); deduced energy-averaged σ. ²⁴Mg levels deduced no evidence for direct reaction mechanism. Hauser-Feshbach calculations.

doi: 10.1103/PhysRevC.19.100
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1978BE25      Phys.Lett. 76B, 47 (1978)

R.R.Betts, N.Stein, J.W.Sunier, C.W.Woods

Multipole Pairing States and the Correspondence between Two- and Four-Particle Transfer Reactions

NUCLEAR REACTIONS ^58,60Ni(⁶Li, d), E=34 MeV; measured σ(Ed, θ). ^62,64Zn levels deduced J, π.

doi: 10.1016/0370-2693(78)90096-5
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1978BE28      Nucl.Phys. A299, 412 (1978); Erratum Nucl.Phys. A312, 524 (1978)

R.R.Betts, H.T.Fortune, D.J.Pullen

A Study of ²⁶Al by the ²⁵Mg(³He, d) Reaction

NUCLEAR REACTIONS ²⁵Mg(³He, d), E=18.0 MeV; measured σ(Ed, θ). ²⁶Al deduced levels I, J, π, (2j+1)S. DWBA analysis.

doi: 10.1016/0375-9474(78)90380-9
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1978FO01      Phys.Rev. C17, 401 (1978)

H.T.Fortune, R.R.Betts, R.Middleton

Possible Selectivity in ¹²C(¹⁰B, d)²⁰Ne

NUCLEAR REACTIONS ¹²C(¹⁰B, d), E=20.0, 20.5 MeV; measured σ(θ).

doi: 10.1103/PhysRevC.17.401
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1978FO02      Nucl.Phys. A294, 208 (1978)

H.T.Fortune, R.R.Betts, J.N.Bishop, M.N.I.Al-Jadir, R.Middleton

Location of 0⁺ 4p-2h and 6p-4h Configurations in ⁴²Ca

NUCLEAR REACTIONS ³⁸Ar(⁶Li, d), E=17.0 MeV; measured σ(Ed, θ). ⁴²Ca deduced relative α-strengths, major configurations of 0+ states. DWBA analysis.

doi: 10.1016/0375-9474(78)90404-9
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1977BA36      Nucl.Phys. A285, 317 (1977)

B.B.Back, R.R.Betts, C.Gaarde, J.S.Larsen, E.Michelsen, Tai Kuang-Hsi

Fusion Cross Sections for the ¹⁶O + ²⁷Al Reaction

NUCLEAR REACTIONS ²⁷Al(¹⁶O, X), E=50-80 MeV; measured σ(E, θ), fusion σ; deduced fusion barrier height, radius, critical radius.

doi: 10.1016/0375-9474(77)90255-X
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1977BE39      Phys.Rev. C16, 1617 (1977)

R.R.Betts

Alpha-Transfer Reactions and the Pairing-Vibration Model

NUCLEAR STRUCTURE ^52,44,46,48Ti, ^62,64,66Zn, ⁵⁴Fe, ⁵⁴Cr, ^58,60Ni; calculated relative strengths of ground-state to ground-state transitions for α-transfer reactions.

doi: 10.1103/PhysRevC.16.1617
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1977BE42      Phys.Rev.Lett. 39, 1183 (1977)

R.R.Betts, S.B.DiCenzo, M.H.Mortensen, R.L.White

Evidence for the Excitation of Giant Resonances in Heavy-Ion Inelastic Scattering

NUCLEAR REACTIONS ²⁷Al(¹²C, X), (¹²C, ¹²C'), E=82 MeV; measured σ(θ), deep inelastic scattering. ²⁷Al resonances deduced L.

doi: 10.1103/PhysRevLett.39.1183
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1977BE65      Nucl.Phys. A292, 281 (1977)

R.R.Betts, H.T.Fortune, J.N.Bishop, M.N.I.Al-Jadir, R.Middleton

Alpha Transfer to 4p-4h States in ⁴⁰Ca

NUCLEAR REACTIONS ³⁶Ar(⁶Li, d), E=17.0 MeV; measured σ(θ). ⁴⁰Ca levels deduced α-strengths. Comparison with ⁴⁴Ti. Enriched gas target.

doi: 10.1016/0375-9474(77)90374-8
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1977MO15      Phys.Lett. 70B, 17 (1977)

M.H.Mortensen, R.R.Betts, C.K.Bockelman

Pair Excitations in the Even W-Isotopes

NUCLEAR REACTIONS W(p, t), E=21 MeV; measured σ(Et, θ). ^178,180,182W deduced levels, J, π.

doi: 10.1016/0370-2693(77)90333-1
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1976AJ02      Phys.Rev. C14, 357 (1976)

F.Ajzenberg-Selove, R.R.Betts, D.J.Crozier

¹⁰B(¹⁰B, α)¹⁶O Reaction

NUCLEAR REACTIONS ¹⁰B(¹⁰B, α), E=20 MeV; measured σ(Eα, θ). ¹⁶O deduced levels.

doi: 10.1103/PhysRevC.14.357
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1976BA05      Phys.Rev. C13, 875 (1976)

B.B.Back, R.R.Betts, C.Gaarde, H.Oeschler

High Spin States in ²³Na and the E(c.m.) = 19.3 MeV ¹²C + ¹²C Resonance

NUCLEAR REACTIONS ¹²C(¹²C, pγ), E=38.6 MeV; measured DSA, pγ(θ). ²³Na deduced levels, T_1/2, J, π, B(E2).

doi: 10.1103/PhysRevC.13.875
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1976BE27      Phys.Lett. 62B, 37 (1976)

R.R.Betts, H.T.Fortune, J.N.Bishop, M.N.I.Al-Jadir, R.Middleton

Proton Excitations in ⁴⁴Ca

NUCLEAR REACTIONS ⁴⁰Ar(⁶Li, d), E=17 MeV; measured σ(θ); deduced α-transfer strengths to levels in ⁴⁴Ca.

doi: 10.1016/0370-2693(76)90041-1
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1976ER03      Phys.Rev.Lett. 37, 670 (1976)

K.A.Erb, R.R.Betts, D.L.Hanson, M.W.Sachs, R.L.White, P.P.Tung, D.A.Bromley

New Resonances in the Low-Energy ¹²C-¹²C Spectrum

NUCLEAR REACTIONS ¹²C(¹²C, α), E(cm)=6.5-11 MeV; measured σ(E, Eα, θ). ²⁰Ne deduced levels. ²⁴Mg deduced resonances, Γα.

doi: 10.1103/PhysRevLett.37.670
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