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NSR database version of April 11, 2024.

Search: Author = J.Behr

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2018FE02      Phys.Rev.Lett. 120, 062502 (2018)

B.Fenker, A.Gorelov, D.Melconian, J.A.Behr, M.Anholm, D.Ashery, R.S.Behling, I.Cohen, I.Craiciu, G.Gwinner, J.McNeil, M.Mehlman, K.Olchanski, P.D.Shidling, S.Smale, C.L.Warner

Precision Measurement of the β Asymmetry in Spin-Polarized 37K Decay

RADIOACTIVITY 37K(EC); measured decay products, Eβ, Iβ; deduced β asymmetry, limits on the mass of a hypothetical WR coupling to right-handed ν. Comparison with available data.

doi: 10.1103/PhysRevLett.120.062502
Citations: PlumX Metrics

2016FE06      New Journal of Physics 18, 073028 (2016)

B.Fenker, J.A.Behr, D.Melconian, R.M.A.Anderson, M.Anholm, D.Ashery, R.S.Behling, I.Cohen, I.Craiciu, J.M.Donohue, C.Farfan, D.Friesen, A.Gorelov, J.McNeil, M.Mehlman, H.Norton, K.Olchanski, S.Smale, O.Theriault, A.N.Vantyghem, C.L.Warner

Precision measurement of the nuclear polarization in laser-cooled, optically pumped 37K

RADIOACTIVITY 37K(β+); measured decay products; deduced optical pumping light polarization, precise value of average nuclear polarization.

doi: 10.1088/1367-2630/18/7/073028
Citations: PlumX Metrics

2015PR03      Eur.Phys.J. A 51, 23 (2015)

T.J.Procter, J.A.Behr, J.Billowes, F.Buchinger, B.Cheal, J.E.Crawford, J.Dilling, A.B.Garnsworthy, A.Leary, C.D.P.Levy, E.Mane, M.R.Pearson, O.Shelbaya, M.Stolz, W.Al Tamimi, A.Voss

Direct observation of an isomeric state in 98Rb and nuclear properties of exotic rubidium isotopes measured by laser spectroscopy

NUCLEAR REACTIONS U(p, x)Rb, E=500 MeV; measured Rb isotopes using TITAN mass trap or optical spectrum using laser spectroscopy. 98Rb deduced isomeric state, hyperfine coefficients, isotope shifts. 75,76,78Rb deduced magnetic dipole moment, electric quadrupole moment, deformation, charge radii, isotopic shifts, g-factors.

ATOMIC PHYSICS U(p, x)Rb, E=500 MeV; measured E(optical γ); deduced isotopic shifts, charge radii. Compared with published muonic and optical data.

doi: 10.1140/epja/i2015-15023-2
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Data from this article have been entered in the XUNDL database. For more information, click here.

2015ZH20      Phys.Rev.Lett. 115, 042501 (2015)

J.Zhang, M.Tandecki, R.Collister, S.Aubin, J.A.Behr, E.Gomez, G.Gwinner, L.A.Orozco, M.R.Pearson, G.D.Sprouse for the FrPNC collaboration

Hyperfine Anomalies in Fr: Boundaries of the Spherical Single Particle Model

NUCLEAR MOMENTS 206,207,209,213,221Fr; measured fluorescence light, sideband frequency; deduced hyperfine splitting of the 7P1/2 state. Comparison with shell model calculations.

doi: 10.1103/PhysRevLett.115.042501
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2014BE02      Hyperfine Interactions 225, 115 (2014)

J.A.Behr, A.Gorelov, K.P.Jackson, M.R.Pearson, M.Anholm, T.Kong, R.S.Behling, B.Fenker, D.Melconian, D.Ashery, G.Gwinner

TRINAT: measuring β-decay correlations with laser-trapped atoms

doi: 10.1007/s10751-013-0887-5
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2014CO18      Phys.Rev. A 90, 052502 (2014), Erratum Phys.Rev. A 92, 019902 (2015)

R.Collister, G.Gwinner, M.Tandecki, J.A.Behr, M.R.Pearson, J.Zhang, L.A.Orozco, S.Aubin, E.Gomez, for the FrPNC Collaboration

Isotope shifts in francium isotopes 206-213Fr and 221Fr

ATOMIC PHYSICS 206,207,208,209,210,211,212,213,221Fr; measured radio-frequency sidebands; deduced isotope shifts. Comparison with available data, theoretical calculations.

doi: 10.1103/PhysRevA.90.052502
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2012GO29      J.Phys.:Conf.Ser. 387, 012004 (2012)

E.Gomez, S.Aubin, R.Collister, J.A.Behr, G.Gwinner, L.A.Orozco, M.R.Pearson, M.Tandecki, D.Sheng, J.Zhang

The FrPNC Experiment, weak interaction studies in Francium at TRIUMF

doi: 10.1088/1742-6596/387/1/012004
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2011MA66      Phys.Rev.Lett. 107, 212502 (2011)

E.Mane, A.Voss, J.A.Behr, J.Billowes, T.Brunner, F.Buchinger, J.E.Crawford, J.Dilling, S.Ettenauer, C.D.P.Levy, O.Shelbaya, M.R.Pearson

First Experimental Determination of the Charge Radius of 74Rb and Its Application in Tests of the Unitarity of the Cabibbo-Kobayashi-Maskawa Matrix

NUCLEAR MOMENTS 74,75,76,78Rb; measured hyperfine coupling constants; deduced nuclear spins, log ft uncertainty.

doi: 10.1103/PhysRevLett.107.212502
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Data from this article have been entered in the XUNDL database. For more information, click here.

2011MI18      Phys.Rev. C 84, 055501 (2011)

K.Minamisono, T.Nagatomo, K.Matsuta, C.D.P.Levy, Y.Tagishi, M.Ogura, M.Yamaguchi, H.Ota, J.A.Behr, K.P.Jackson, A.Ozawa, M.Fukuda, T.Sumikama, H.Fujiwara, T.Iwakoshi, R.Matsumiya, M.Mihara, A.Chiba, Y.Hashizume, T.Yasuno, T.Minamisono

Low-energy test of second-class current in β decays of spin-aligned 20F and 20Na

RADIOACTIVITY 20F(β-)[from 19F(polarized 2H, p), E=6 MeV]; 20Na(β+)[from Si(p, X), E=500 MeV]; measured Eβ, β(θ), βγ(θ) from nuclear spin-polarized nuclei using β-NMR technique; deduced alignment correlation terms, G-parity-violating, second-class current (SCC) induced tensor term, weak-magnetism term in the framework of the conserved vector current hypothesis. Experiments at UTTAC and TRIUMF facilities.

doi: 10.1103/PhysRevC.84.055501
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2010MI03      Nucl.Instrum.Methods Phys.Res. A616, 45 (2010)

K.Minamisono, K.Matsuta, T.Minamisono, C.D.P.Levy, T.Nagatomo, M.Ogura, T.Sumikama, J.A.Behr, K.P.Jackson, M.Mihara, M.Fukuda

Nuclear polarization of short-lived Na isotopes maintained in single crystals for β-NMR spectroscopy

ATOMIC PHYSICS 20,21,26,27,28Na; measured NMR spectra; deduced ground-state magnetic dipole and quadrupole moments.

doi: 10.1016/j.nima.2010.02.101
Citations: PlumX Metrics

2009MI04      Phys.Lett. B 672, 120 (2009)

K.Minamisono, K.Matsuta, T.Minamisono, C.D.P.Levy, T.Nagatomo, M.Ogura, T.Sumikama, J.A.Behr, K.P.Jackson, M.Mihara, M.Fukuda

Quadrupole moments of neutron-deficient 20, 21Na

NUCLEAR MOMENTS 20,21,27Na [from Si(p, X), E=500 MeV]; measured β-NMR spectra; deduced quadrupole coupling constants and quadrupole moments. Comparison with shell model predictions and data.

doi: 10.1016/j.physletb.2009.01.006
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2009PI01      Phys.Rev. C 79, 015501 (2009)

J.R.A.Pitcairn, D.Roberge, A.Gorelov, D.Ashery, O.Aviv, J.A.Behr, P.G.Bricault, M.Dombsky, J.D.Holt, K.P.Jackson, B.Lee, M.R.Pearson, A.Gaudin, B.Dej, C.Hohr, G.Gwinner, D.Melconian

Tensor interaction constraints from β-decay recoil spin asymmetry of trapped atoms

RADIOACTIVITY 80Rb(β+); measured daughter nucleus recoil angular distributions, recoil asymmetry; deduced tensor interaction constraints. Spin-polarized nucleus. Comparison with standard model predictions.

doi: 10.1103/PhysRevC.79.015501
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2008TA11      Phys.Rev. C 77, 052501 (2008)

E.R.Tardiff, J.A.Behr, T.E.Chupp, K.Gulyuz, R.S.Lefferts, W.Lorenzon, S.R.Nuss-Warren, M.R.Pearson, N.Pietralla, G.Rainovski, J.F.Sell, G.D.Sprouse

Polarization and relaxation rates of radon

RADIOACTIVITY 209Fr(EC) [from 197Au(16O, 4n), E=91 MeV]; measured Eγ, Iγ, spin exchange polarization, quadrupole-dominated wall relaxationrate, dependence of γ-ray anisotropies on temperature.

doi: 10.1103/PhysRevC.77.052501
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2007ME19      Phys.Lett. B 649, 370 (2007)

D.Melconian, J.A.Behr, D.Ashery, O.Aviv, P.G.Bricault, M.Dombsky, S.Fostner, A.Gorelov, S.Gu, V.Hanemaayer, K.P.Jackson, M.R.Pearson, I.Vollrath

Measurement of the neutrino asymmetry in the β decay of laser-cooled, polarized 37K

doi: 10.1016/j.physletb.2007.04.047
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2007TA17      Nucl.Instrum.Methods Phys.Res. A579, 472 (2007)

E.R.Tardiff, T.E.Chupp, W.Lorenzon, S.R.Nuss-Warren, J.A.Behr, M.R.Pearson, K.Gulyuz, R.S.Lefferts, N.Pietralla, G.Rainovski, J.F.Sell, G.D.Sprouse

Polarization and relaxation of 209Rn

RADIOACTIVITY 209Rn(EC); measured Eγ, Iγ, polarization and relaxation.

doi: 10.1016/j.nima.2007.04.105
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2007ZG01      Acta Phys.Pol. B38, 1179 (2007)

E.F.Zganjar, T.Achtzehn, D.Albers, C.Andreoiu, A.N.Andreyev, R.A.E.Austin, G.C.Ball, J.A.Behr, G.C.Biosvert, P.Bricault, S.Bishop, R.S.Chakrawarthy, R.Churchman, D.Cross, E.Cunningham, J.M.D'Auria, M.Dombsky, P.Finlay, P.E.Garrett, G.F.Grinyer, G.Hackman, V.Hanemaayer, J.C.Hardy, D.F.Hodgson, B.Hyland, V.Iacob, P.Klages, K.A.Koopmans, W.D.Kulp, J.Lassen, J.P.Lavoie, J.R.Leslie, T.Linder, J.A.Macdonald, H.-B.Mak, D.Melconian, A.C.Morton, W.E.Ormand, C.J.Osborne, C.J.Pearson, M.R.Pearson, A.A.Phillips, A.Piechaczek, J.Ressler, F.Sarazin, G.Savard, M.A.Schumaker, H.C.Scraggs, C.E.Svensson, J.J.Valiente-Dobon, I.S.Towner, J.C.Waddington, P.M.Walker, K.Wendt, J.L.Wood

Superallowed Beta Decay Studies at TRIUMF - Nuclear Structure and Fundamental Symmetries

2006PH01      Phys.Rev. C 74, 027302 (2006)

A.A.Phillips, C.Andreoiu, G.C.Ball, D.Bandyopadhyay, J.A.Behr, T.E.Chupp, P.Finlay, P.E.Garrett, G.F.Grinyer, G.Hackman, M.E.Hayden, B.Hyland, S.R.Nuss-Warren, M.R.Pearson, M.A.Schumaker, M.B.Smith, C.E.Svensson, E.R.Tardiff, J.J.Valiente-Dobon, T.Warner

Half-life of 120Xe

RADIOACTIVITY 120Cs, 120Xe, 120I(β+), (EC); measured Eγ, Iγ, T1/2.

doi: 10.1103/PhysRevC.74.027302
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2006SA52      Hyperfine Interactions 171, 181 (2006)

R.Sanchez, W.Nortershauser, A.Dax, G.Ewald, S.Gotte, R.Kirchner, H.-J.Kluge, T.Kuhl, A.Wojtaszek, B.A.Bushaw, G.W.F.Drake, Z.-C.Yan, C.Zimmermann, D.Albers, J.Behr, P.Bricault, J.Dilling, M.Dombsky, J.Lassen, C.D.P.Levy, M.R.Pearson, E.J.Prime, V.Ryjkov

Nuclear charge radius of 11Li

NUCLEAR MOMENTS 11Li; measured optical isotope shift; deduced charge radius. Laser spectroscopy.

doi: 10.1007/s10751-007-9507-6
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2005BE63      Eur.Phys.J. A 25, Supplement 1, 685 (2005)

J.A.Behr, A.Gorelov, D.Melconian, M.Trinczek, W.P.Alford, D.Ashery, P.G.Bricault, L.Courneyea, J.M.D'Auria, J.Deutsch, J.Dilling, M.Dombsky, P.Dube, F.Gluck, S.Gryb, S.Gu, O.Hausser, K.P.Jackson, B.Lee, A.Mills, E.Paradis, M.Pearson, R.Pitcairn, E.Prime, D.Roberge, T.B.Swanson

Weak interaction symmetries with atom traps

doi: 10.1140/epjad/i2005-06-097-9
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2005GO11      Phys.Rev.Lett. 94, 142501 (2005)

A.Gorelov, D.Melconian, W.P.Alford, D.Ashery, G.Ball, J.A.Behr, P.G.Bricault, J.M.D'Auria, J.Deutsch, J.Dilling, M.Dombsky, P.Dube, J.Fingler, U.Giesen, F.Gluck, S.Gu, O.Hausser, K.P.Jackson, B.K.Jennings, M.R.Pearson, T.J.Stocki, T.B.Swanson, M.Trinczek

Scalar Interaction Limits from the β-ν Correlation of Trapped Radioactive Atoms

RADIOACTIVITY 38mK(β+); measured Eβ, recoil spectrum, (recoil)β-coin; deduced β-ν correlation parameter. Magneto-optical trap.

doi: 10.1103/PhysRevLett.94.142501
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2004LE38      Nucl.Phys. A746, 206c (2004)

C.D.P.Levy, R.Baartman, J.A.Behr, R.F.Kiefl, M.Pearson, R.Poutissou, A.Hatakeyama, Y.Hirayama

The collinear laser beam line at ISAC

doi: 10.1016/j.nuclphysa.2004.09.118
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2004MI50      Nucl.Phys. A746, 501c (2004)

K.Minamisono, K.Matsuta, T.Minamisono, C.D.P.Levy, T.Nagatomo, M.Ogura, T.Sumikama, J.A.Behr, K.P.Jackson, H.Fujiwara, M.Mihara, M.Fukuda

Quadrupole moments of 20, 21Na

NUCLEAR MOMENTS 20,21Na; measured β-NQR spectra; deduced quadrupole coupling constants, quadrupole moment ratio. Comparison with model predictions, previous results.

doi: 10.1016/j.nuclphysa.2004.09.077
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2004MI51      Nucl.Phys. A746, 673c (2004)

K.Minamisono, K.Matsuta, T.Minamisono, C.D.P.Levy, T.Nagatomo, M.Ogura, T.Sumikama, J.A.Behr, K.P.Jackson, H.Fujiwara, M.Mihara, M.Fukuda

Alignment correlation term in the β-ray angular distribution from spin aligned 20Na

RADIOACTIVITY 20Na(β+), (EC) [from Si(p, X)]; measured Iβ(θ, H, t) from polarized source; deduced alignment correlation term.

doi: 10.1016/j.nuclphysa.2004.09.049
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2004MI59      Hyperfine Interactions 159, 261 (2004)

K.Minamisono, K.Matsuta, T.Minamisono, C.D.P.Levy, T.Nagatomo, M.Ogura, T.Sumikama, J.A.Behr, K.P.Jackson, H.Fujiwara, M.Mihara, M.Fukuda

Production of Nuclear Polarization of Na Isotopes at ISAC/TRIUMF and its Hyperfine Interaction

NUCLEAR MOMENTS 20,21,26,27,28Na; measured Ie, Ee, polarization; deduced 20Na ground state quadrupole moment Q, hyperfine levels. β-NMR technique.

doi: 10.1007/s10751-005-9107-2
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2004OG13      Hyperfine Interactions 159, 235 (2004)

M.Ogura, T.Nagatomo, K.Minamisomo, K.Matsuta, T.Minamisono, Y.Nakashima, C.D.P.Levy, T.Sumikama, M.Mihara, H.Fujiwara, S.Kumashiro, M.Fukuda, J.A.Behr, K.P.Jackson, S.Momota, Y.Nojiri, T.Ohtsubo, M.Ohta, A.Kitagawa, M.Kanazawa, M.Torikoshi, S.Sato, M.Suda, J.R.Alonso, G.F.Krebs, T.M.Symons

Quadrupole Moments of Na Isotopes

NUCLEAR MOMENTS 20,21,25Na; measured electric quadrupole coupling constants; deduced the ratio of Q ratio 20Na/21Na and 25Na/21Na. β-NMR technique.

doi: 10.1007/s10751-005-9105-4
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2003ME08      Nucl.Instrum.Methods Phys.Res. B204, 540 (2003)

D.Melconian, D.Ashery, G.Ball, J.A.Behr, P.Bricault, B.A.Brown, M.Dombsky, K.P.Jackson, S.Fostner, A.Gorelov, M.N.Groves, S.Gu, M.R.Pearson, I.S.Towner, M.Trinczek, I.Vollrath

Measuring isospin mixing in 36Ar using a polarized, neutral atom trap

RADIOACTIVITY 37K(EC); measured β-asymmetry from polarized source. Optical pumping, application to planned experiment discussed.

doi: 10.1016/S0168-583X(02)02129-8
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2003TR01      Phys.Rev.Lett. 90, 012501 (2003)

M.Trinczek, A.Gorelov, D.Melconian, W.P.Alford, D.Asgeirsson, D.Ashery, J.A.Behr, P.G.Bricault, J.M.D'Auria, J.Deutsch, J.Dilling, M.Dombsky, P.Dube, S.Eaton, J.Fingler, U.Giesen, S.Gu, O.Hausser, K.P.Jackson, B.Lee, J.H.Schmid, T.J.Stocki, T.B.Swanson, W.Wong

Novel Search for Heavy ν Mixing from the β+ Decay of 38mK Confined in an Atom Trap

RADIOACTIVITY 38mK(β+); measured Eβ, recoil energy; deduced neutrino momentum, admixture limits.

doi: 10.1103/PhysRevLett.90.012501
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2001BA12      Phys.Rev.Lett. 86, 1454 (2001)

G.C.Ball, S.Bishop, J.A.Behr, G.C.Boisvert, P.Bricault, J.Cerny, J.M.D'Auria, M.Dombsky, J.C.Hardy, V.Iacob, J.R.Leslie, T.Lindner, J.A.Macdonald, H.-B.Mak, D.M.Moltz, J.Powell, G.Savard, I.S.Towner

Precise Half-Life Measurement for the Superallowed 0+ → 0+ β Emitter 74Rb: First results from the new radioactive beam facility (ISAC) at TRIUMF

RADIOACTIVITY 74Rb(β+) [from Nb(p, X)]; measured superallowed decay T1/2.

doi: 10.1103/PhysRevLett.86.1454
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2000GO54      Hyperfine Interactions 127, 373 (2000)

A.Gorelov, J.A.Behr, D.Melconian, M.Trinczek, P.Dube, O.Hausser, U.Giesen, K.P.Jackson, T.Swanson, J.M.D'Auria, M.Dombsky, G.Ball, L.Buchmann, B.Jennings, J.Dilling, J.Schmid, D.Ashery, J.Deutsch, W.P.Alford, D.Asgeirsson, W.Wong, B.Lee

Beta-neutrino correlation experiments on laser trapped 38mK, 37K

RADIOACTIVITY 38mK(β+); measured recoil spectra, (recoil)β-coin; deduced neutrino momentum, β-ν correlation.

doi: 10.1023/A:1012649229978
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2000KI16      Acta Phys.Pol. B31, 423 (2000)

M.Kicinska-Habior, K.A.Snover, J.A.Behr, Z.M.Drebi, O.Kijewska

Bremsstrahlung Radiation in Heavy-Ion Collisions 18O + 27Al → 45Sc at 8.3 MeV/u

NUCLEAR REACTIONS 27Al(18O, X), E=8.3 MeV/nucleon; measured Eγ, Iγ(θ). 45Sc deduced GDR parameters. Transport model calculations.

1998DI15      Hyperfine Interactions 115, 159 (1998)

J.Dilling, J.A.Behr, A.Gorelov, T.Swanson, O.Hausser, D.Melconian, K.P.Jackson, M.Trinczek, U.Giesen, J.M.D'Auria

Beta-Decay Experiments of Neutral Atoms in a Magneto-Optical Trap

RADIOACTIVITY 37,38mK(β+); measured β-spectra, (recoil)β-coin. Magneto-optical trap.

doi: 10.1023/A:1012656907610
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1997BE35      Phys.Rev.Lett. 79, 375 (1997)

J.A.Behr, A.Gorelov, T.Swanson, O.Hausser, K.P.Jackson, M.Trinczek, U.Giesen, J.M.D'Auria, R.Hardy, T.Wilson, P.Choboter, F.Leblond, L.Buchmann, M.Dombsky, C.D.P.Levy, G.Roy, B.A.Brown, J.Dilling

Magneto-Optic Trapping of β-Decaying 38mK, 37K from an On-Line Isotope Separator

RADIOACTIVITY 37,38mK(EC); measured optical isotope shifts; deduced mean squared charge radii difference. Other isotopes, quadrupole moments discussed.

doi: 10.1103/PhysRevLett.79.375
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1996BE13      Phys.Rev. C53, 1759 (1996)

J.A.Behr, K.A.Snover, C.A.Gossett, G.Feldman, J.H.Gundlach, M.Kicinska-Habior

Nonstatistical γ Emission in 3He- and α-Induced Reactions

NUCLEAR REACTIONS 61Ni, 95Mo, 119,124Sn, 148,154Sm, 181Ta(α, γ), E=11-28 MeV; C, O, 61,62Ni, 95,96Mo, 120,124Sn, 148Sm, 181Ta(3He, γ), E=11-28 MeV; measured γ-ray production σ(Eγ) at θγ=90°; deduced systematics of nonstatistical γ-ray yields. Statistical model, direct plus semdirect excitation of the giant dipole resonance, including Coulomb, projectile excitation.

doi: 10.1103/PhysRevC.53.1759
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1996BO54      Hyperfine Interactions 101/102, 433 (1996)

P.Bogorad, J.Behr, E.J.Brash, G.D.Cates, W.J.Cummings, A.Gorelov, M.D.Hasinoff, O.Hausser, K.Hicks, R.Holmes, J.C.Huang, K.S.Kumar, B.Larson, W.Lorentzon, J.McCracken, H.Middleton, P.Michaux, E.Saettler, D.Siegel, P.A.Souder, D.R.Swenson, D.Tupa, X.Wang, A.Young

Laser-Polarized Muonic 3He and a Measurement of the Induced Pseudoscalar Coupling

NUCLEAR REACTIONS 3He(polarized μ-, ν), E at rest; measured triton asymmetry; deduced reaction spin dependence.

doi: 10.1007/BF02227653
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1996CA02      Nucl.Phys. A598, 61 (1996)

P.Campbell, J.A.Behr, J.Billowes, G.Gwinner, G.D.Sprouse, F.Xu

Magnetic Dipole and Electric Quadrupole Moments of the Neutron-Deficient Bismuth Isotopes

RADIOACTIVITY 202,203,204Bi(EC); measured hfs; deduced hyperfine coupling constants, μ, quadrupole moments, trends around 208Pb. Gas cell spectroscopy, Bi-Ar system.

doi: 10.1016/0375-9474(95)00462-9
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1996VO14      Hyperfine Interactions 97/98, 529 (1996)

P.A.Voytas, J.A.Behr, A.Ghosh, G.Gwinner, L.A.Orozco, J.E.Simsarian, G.D.Sprouse, F.Xu

Laser Traps for Radioactive Isotopes

NUCLEAR REACTIONS 197Au(18O, xn)209Fr/210Fr/211Fr, E=115 MeV; measured α-spectra following residual nuclei decay. Laser trapping of radioactive isotopes.

1995CA11      Phys.Lett. 346B, 21 (1995)

P.Campbell, J.Billowes, J.A.Behr, G.Gwinner, G.D.Sprouse, F.Xu

Isotope Shifts of the Neutron-Deficient Bismuth Isotopes: Charge radii systematics across the Z = 82 shell closure

RADIOACTIVITY 202,203Bi(EC), (β+); 204Bi(EC) [from 197Au(11B, xn), E=86 MeV]; measured isotope shifts; deduced hyperfine coupling constants, King plots. 202,203,204,205,206,208Bi deduced mean square charge radii. King plots for Tl, Po isotopes included, other data input. Laser spectroscopy, sensitive gas cell technique.

doi: 10.1016/0370-2693(95)00014-C
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1994BE60      Nucl.Instrum.Methods Phys.Res. A351, 256 (1994)

J.A.Behr, S.B.Cahn, S.B.Dutta, A.Ghosh, G.Gwinner, C.H.Holbrow, L.A.Orozco, G.D.Sprouse, J.Urayama, F.Xu

A Low-Energy Ion Beam from Alkali Heavy-Ion Reaction Products

NUCLEAR REACTIONS 197Au(18O, xn), E=110-115 MeV; measured Eα, Iα; deduced 209,210,211Fr yield vs target temperature. 51V(31P, n2p), E=90 MeV; 51V(32S, 2n2p), E=145 MeV; measured Eγ, Iγ following residuals decay. Ion beam apparatus for alkali atoms transport.

doi: 10.1016/0168-9002(94)91351-X
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1994GW01      Phys.Rev.Lett. 72, 3795 (1994)

G.Gwinner, J.A.Behr, S.B.Cahn, A.Ghosh, L.A.Orozco, G.D.Sprouse, F.Xu

Magneto-Optic Trapping of Radioactive 79Rb

doi: 10.1103/PhysRevLett.72.3795
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1994KI03      Nucl.Phys. A569, 17c (1994)

M.Kicinska-Habior, K.A.Snover, J.A.Behr, C.A.Gossett, J.H.Gundlach, Z.M.Drebi, M.S.Kaplan, D.P.Wells

Shape Changes and Isospin Purity in Highly Excited Light Mass Nuclei

NUCLEAR REACTIONS 27Al(12C, X), (18O, X), (19F, X), E not given; analyzed γ-spectra, σ(Eγ), Iγ(θ) data; deduced shape changes, isospin purity in hot nuclei. Other data discussed.

doi: 10.1016/0375-9474(94)90092-2
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1993BE17      Phys.Rev.Lett. 70, 3201 (1993)

J.A.Behr, K.A.Snover, C.A.Gossett, M.Kicinska-Habior, J.H.Gundlach, Z.M.Drebi, M.S.Kaplan, D.P.Wells

Restoration of Isospin Symmetry in Highly Excited Compound Nuclei

NUCLEAR REACTIONS 12C, 13C(16O, X), (18O, X), (13C, X), (14N, X), (15N, X), E=22-108 MeV; measured γ production σ. 28Si, 26Al deduced isospin admixture, spreading widths.

doi: 10.1103/PhysRevLett.70.3201
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1993FE01      Phys.Rev. C47, 1436 (1993)

G.Feldman, K.A.Snover, J.A.Behr, C.A.Gossett, J.H.Gundlach, M.Kicinska-Habior

Statistical γ Decay of the Giant Dipole Resonance in Highly Excited 46Ti and 52Cr

NUCLEAR REACTIONS 27Al(19F, X), E=30-60 MeV; 48Ti(α, X), E=12-28 MeV; measured inclusive γ production σ(E). 46Ti, 52Cr deduced GDR built on excited states, parameters.

doi: 10.1103/PhysRevC.47.1436
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1993KI12      Phys.Lett. 308B, 225 (1993)

M.Kicinska-Habior, K.A.Snover, J.A.Behr, C.A.Gossett, Y.Alhassid, N.Whelan

Search for a Phase Transition in the Nuclear Shape at Finite Temperature and Rapid Rotation

NUCLEAR REACTIONS 27Al(18O, X), E=44.9-109.6 MeV; measured Eγ, Iγ; deduced σ(E). 45Sc deduced GDR strength function, deformation features. Liquid drop model.

doi: 10.1016/0370-2693(93)91276-S
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1992BE48      Hyperfine Interactions 74, 23 (1992)

J.Behr, S.Cahn, J.Das, G.Gwinner, C.H.Holbrow, T.Lauritsen, L.A.Orozco, S.Shang, J.Schecker, G.D.Sprouse, F.Xu

Laser Spectroscopy of Nuclear Reaction Products: Recent results and future prospects

ATOMIC PHYSICS 174,176,178,180Hf; measured fluorescence spectra. Laser spectroscopy, recoil into gas method. Information on 154,152,156,158Yb included.

doi: 10.1007/BF02398613
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1992KI01      Phys.Rev. C45, 569 (1992)

M.Kicinska-Habior, K.A.Snover, J.A.Behr, C.A.Gossett, J.H.Gundlach, G.Feldman

Comparison of Giant Dipole Resonance Decay in Stiff 92Mo and Soft 100Mo Excited Nuclei

NUCLEAR REACTIONS 76Se(17O, X), E=50, 72.2 MeV; 82Se(18O, X), E=49.1-72.8 MeV; measured σ(Eγ), θ=90°. 92,100Mo deduced GDR built on excited states, decay features.

doi: 10.1103/PhysRevC.45.569
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1990GO23      Phys.Rev. C42, R1800 (1990)

C.A.Gossett, J.A.Behr, S.J.Luke, B.T.McLain, D.P.Rosenzweig, K.A.Snover, W.T.Hering

High-Energy Gamma Emission in Heavy-Ion Collisions at 9-14 MeV/Nucleon

NUCLEAR REACTIONS 92,100Mo(12C, X), E=9-14 MeV/nucleon; measured σ(E, Eγ); 92,100Mo(12C, X), E=11 MeV/nucleon; measured σ(θ, Eγ); 92,100Mo(13C, X), E=10, 11 MeV/neucleon; measured σ(Eγ). Enriched targets. Comparision with collective and nucleon-nucleon bremsstrahlung photon production mechanisms.

doi: 10.1103/PhysRevC.42.R1800
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1990GU20      Phys.Rev.Lett. 65, 2523 (1990)

J.H.Gundlach, K.A.Snover, J.A.Behr, C.A.Gossett, M.Kicinska-Habior, K.T.Lesko

Oblate Deformed Shapes of Hot Rotating Nuclei Deduced from Giant-Dipole-Resonance Decay Studies

NUCLEAR REACTIONS 72Ge(18O, X), E=50, 74 MeV; 64Ni(28Si, X), E=137 MeV; measured Eγ, Iγ, σ(Eγ), γ(θ). 90Zr, 92Mo deduced GDR parameters, shape features. Hot rotating nuclei.

doi: 10.1103/PhysRevLett.65.2523
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1990KI04      Phys.Rev. C41, 2075 (1990)

M.Kicinska-Habior, K.A.Snover, J.A.Behr, G.Feldman, C.A.Gossett, J.H.Gundlach

Spin Dependence of the Giant-Dipole-Resonance Strength Function in Highly Excited Nuclei in the Mass Region A = 39-45

NUCLEAR REACTIONS, ICPND 27Al(12C, X), E=33.8-62.7 MeV; 27Al(13C, X), E=39.7 MeV; 27Al(15N, X), E=29.2, 44.7 MeV; 27Al(18O, X), E=31.5-72.5 MeV; measured continuum Eγ, Iγ, γ(θ); deduced fusion σ. 39,40K, 42Ca, 45Sc deduced GDR strength function.

doi: 10.1103/PhysRevC.41.2075
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1988GO05      J.Phys.(London) G14, Supplement S267 (1988)

C.A.Gossett, J.A.Behr, G.Feldman, J.H.Gundlach, M.Kicinska-Habior, K.A.Snover

Systematic Behaviour of the Giant Dipole Resonance in Highly Excited Nuclei

NUCLEAR REACTIONS 154Sm(12C, X), E=61.2 MeV; calculated σ(Eγ, E). 166Er deduced GDR role.

NUCLEAR STRUCTURE 108Sn, 140Ce, 156,166Er; calculated photoabsorption σ; deduced GDR role.

doi: 10.1088/0305-4616/14/S/028
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1987KI17      Phys.Rev. C36, 612 (1987)

M.Kicinska-Habior, K.A.Snover, C.A.Gossett, J.A.Behr, G.Feldman, H.K.Glatzel, J.H.Gundlach, E.F.Garman

Statistical Giant Dipole Resonance Decay of Highly Excited States of 63Cu

NUCLEAR REACTIONS 59Co(α, γ), E=17.8-28.4 MeV; 57Fe(6Li, X), E=13.9-36 MeV; 51V(12C, X), E=26.3-64.7 MeV; 45Sc(18O, X), E=39.9-75.1 MeV; measured σ(Eγ). 63Cu deduced giant dipole resonance parameters. 62,63Cu, 60,62Ni, 59Co, 56Fe deduced level densities. NaI detector. Statistical model analyses.

doi: 10.1103/PhysRevC.36.612
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1985GO04      Phys.Rev.Lett. 54, 1486 (1985)

C.A.Gossett, K.A.Snover, J.A.Behr, G.Feldman, J.L.Osborne

Deformation of Heated Nuclei Observed in the Statistical Decay of the Giant Dipole Resonance

NUCLEAR REACTIONS 154,148Sm(12C, X), E=63 MeV; measured Eγ, Iγ, continuum spectra, σ(Eγ). 160,166Er deduced excited state based GDR parameters, splitting, deformation at high temperature.

doi: 10.1103/PhysRevLett.54.1486
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1983BE56      Nucl.Phys. A411, 199 (1983)

J.A.Behr, P.Vogel

β-Decay Phenomenology of Nuclear Fission Products

RADIOACTIVITY 86,87,89,82,84,88Br, 94,98,97Sr, 101,96,98Nb, 107Ru, 114,110,112,117,116,119,120,118Ag, 116,118,120,123,121,122,127,125,129,126,128,124In, 127,132Sn, 131,126,128,130,132,133,134Sb, 133,135Te, 141,143,144,145Ba, 144,146,148Pr, 152,154Pm, 79,81,83Ge, 87,90,89,92,91,93Kr, 89,88,91,90,93,92,94Rb, 94,95,92,96,99,97,98Y, 72,76,80,78,81,79,77Ga, 81,80,82As, 83,85Se, 108,106,110Rh, 77,76Zn, 99Zr, 104,102Tc, 132,134,136,139,137I, 137,140,139,141,143Xe, 139,138,140,144,143,141,142Cs, 145,144,140,142La(β-); analyzed average β-endpoint, electron energy from compilations; deduced data set differences. Nuclear fission β-decay.

doi: 10.1016/0375-9474(83)90388-3
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