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NSR database version of May 24, 2024.

Search: Author = I.J.Macgregor

Found 63 matches.

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2023BA25      Phys.Lett. B 844, 138080 (2023)

M.Bashkanov, D.P.Watts, S.Kay, S.Abt, P.Achenbach, P.Adlarson, F.Afzal, Z.Ahmed, C.S.Akondi, J.R.M.Annand, H.J.Arends, R.Beck, M.Biroth, N.Borisov, A.Braghieri, W.J.Briscoe, F.Cividini, C.Collicott, S.Costanza, A.Denig, E.J.Downie, P.Drexler, S.Fegan, A.Fix, S.Gardner, D.Ghosal, D.I.Glazier, I.Gorodnov, W.Gradl, M.Gunther, D.Gurevich, L.Heijkenskjold, D.Hornidge, G.M.Huber, A.Kaser, V.L.Kashevarov, M.Korolija, B.Krusche, A.Lazarev, K.Livingston, S.Lutterer, I.J.D.MacGregor, D.M.Manley, P.P.Martel, R.Miskimen, E.Mornacchi, C.Mullen, A.Neganov, A.Neiser, M.Ostrick, P.B.Otte, D.Paudyal, P.Pedroni, A.Powell, S.N.Prakhov, V.Sokhoyan, K.Spieker, O.Steffen, I.I.Strakovsky, T.Strub, I.Supek, A.Thiel, M.Thiel, A.Thomas, Yu.A.Usov, S.Wagner, J.Wettig, M.Wolfes, N.Zachariou

First measurement of polarisation transfer Cnx, in deuteron photodisintegration

NUCLEAR REACTIONS 2H(polarized γ, X), E=370-700 MeV; measured reaction products; deduced the polarisation transfer from a circularly-polarised photon to the final state neutron in deuterium photodisintegration. Cryogenic liquid deuterium target within the Crystal Ball detector at MAMI.

doi: 10.1016/j.physletb.2023.138080
Citations: PlumX Metrics


2019AK10      Eur.Phys.J. A 55, 202 (2019)

C.S.Akondi, K.Bantawa, D.M.Manley, S.Abt, P.Achenbach, F.Afzal, P.Aguar-Bartolome, Z.Ahmed, J.R.M.Annand, H.J.Arends, M.Bashkanov, R.Beck, M.Biroth, N.Borisov, A.Braghieri, W.J.Briscoe, F.Cividini, C.Collicott, S.Costanza, A.Denig, M.Dieterle, E.J.Downie, P.Drexler, M.I.Ferretti-Bondy, S.Gardner, D.I.Glazier, I.Gorodnov, W.Gradl, M.Gunther, D.Gurevich, S.Kay, L.Heijkenskjold, D.Hornidge, G.M.Huber, M.Kaser, V.L.Kashevarov, M.Korolija, B.Krusche, A.Lazarev, K.Livingston, S.Lutterer, J.C.McGeorge, I.J.D.MacGregor, P.P.Martel, D.G.Middleton, R.Miskimen, E.Mornacchi, A.Mushkarenkov, C.Mullen, A.Neganov, A.Neiser, M.Oberle, M.Ostrick, P.B.Otte, B.Oussena, D.Paudyal, P.Pedroni, A.Powell, S.N.Prakhov, G.Ron, T.Rostomyan, A.Sarty, C.Sfienti, V.Sokhoyan, K.Spieker, O.Steffen, I.I.Strakovsky, Th.Strub, I.Supek, A.Thiel, M.Thiel, A.Thomas, M.Unverzagt, Yu.A.Usov, N.K.Walford, D.P.Watts, S.Wagner, D.Werthmuller, J.Wettig, L.Witthauer, M.Wolfes

Experimental study of the γp → K0Σ+, γn → K0Λ, and γn → K0Σ0 reactions at the Mainz Microtron

doi: 10.1140/epja/i2019-12924-x
Citations: PlumX Metrics


2019BA02      Phys.Lett. B 789, 7 (2019)

M.Bashkanov, S.Kay, D.P.Watts, C.Mullen, S.Abt, P.Achenbach, P.Adlarson, F.Afzal, Z.Ahmed, C.S.Akondi, J.R.M.Annand, H.J.Arends, R.Beck, M.Biroth, N.Borisov, A.Braghieri, W.J.Briscoe, F.Cividini, C.Collicott, S.Costanza, A.Denig, E.J.Downie, P.Drexler, S.Garni, D.I.Glazier, I.Gorodnov, W.Gradl, M.Gunther, D.Gurevich, L.Heijkenskjold, D.Hornidge, G.M.Huber, A.Kaser, V.L.Kashevarov, M.Korolija, B.Krusche, A.Lazarev, K.Livingston, S.Lutterer, I.J.D.MacGregor, R.Macrae, D.M.Manley, P.P.Martel, R.Miskimen, E.Mornacchi, A.Neganov, A.Neiser, M.Ostrick, P.B.Otte, D.Paudyal, P.Pedroni, A.Powell, S.N.Prakhov, G.Ron, T.Rostomyan, A.Sarty, C.Sfienti, V.Sokhoyan, K.Spieker, O.Steffen, I.I.Strakovsky, T.Strub, I.Supek, A.Thiel, M.Thiel, A.Thomas, Yu.A.Usov, S.Wagner, N.K.Walford, D.Werthmuller, J.Wettig, M.Wolfes, L.A.Zana

Deuteron photodisintegration by polarized photons in the region of the d*(2380)

NUCLEAR REACTIONS 2H(polarized γ, np), E=420-620 MeV; measured reaction products; deduced beam-spin asymmetry for deuteron photodisintegration.

doi: 10.1016/j.physletb.2018.12.026
Citations: PlumX Metrics


2017DI10      Phys.Lett. B 770, 523 (2017)

M.Dieterle, L.Witthauer, F.Cividini, S.Abt, P.Achenbach, P.Adlarson, F.Afzal, Z.Ahmed, C.S.Akondi, J.R.M.Annand, H.J.Arends, M.Bashkanov, R.Beck, M.Biroth, N.S.Borisov, A.Braghieri, W.J.Briscoe, S.Costanza, C.Collicott, A.Denig, E.J.Downie, P.Drexler, M.I.Ferretti-Bondy, S.Gardner, S.Garni, D.I.Glazier, D.Glowa, W.Gradl, M.Gunther, G.M.Gurevich, D.Hamilton, D.Hornidge, G.M.Huber, A.Kaser, V.L.Kashevarov, S.Kay, I.Keshelashvili, R.Kondratiev, M.Korolija, B.Krusche, A.B.Lazarev, J.M.Linturi, V.Lisin, K.Livingston, S.Lutterer, I.J.D.MacGregor, J.Mancell, D.M.Manley, P.P.Martel, V.Metag, W.Meyer, R.Miskimen, E.Mornacchi, A.Mushkarenkov, A.B.Neganov, A.Neiser, M.Oberle, M.Ostrick, P.B.Otte, D.Paudyal, P.Pedroni, A.Polonski, S.N.Prakhov, A.Rajabi, G.Reicherz, G.Ron, T.Rostomyan, A.Sarty, C.Sfienti, M.H.Sikora, V.Sokhoyan, K.Spieker, O.Steffen, I.I.Strakovsky, Th.Strub, I.Supek, A.Thiel, M.Thiel, A.Thomas, M.Unverzagt, Yu.A.Usov, S.Wagner, N.K.Walford, D.P.Watts, D.Werthmuller, J.Wettig, M.Wolfes, L.Zana

First measurement of the polarization observable E and helicity-dependent cross sections in single π0 photoproduction from quasi-free nucleons

NUCLEAR REACTIONS 2H(γ, π0), E=400-1450 MeV; measured reaction products; deduced σ.

doi: 10.1016/j.physletb.2017.04.079
Citations: PlumX Metrics


2015AL28      Eur.Phys.J. A 51, 123 (2015), Erratum Eur.Phys.J. A 51, 138 (2015)

R.Al Jebali, J.R.M.Annand, J.-O.Adler, I.Akkurt, E.Buchanan, J.Brudvik, K.Fissum, S.Gardner, D.J.Hamilton, K.Hansen, L.Isaksson, K.Livingston, M.Lundin, J.C.McGeorge, I.J.D.MacGregor, R.MacRae, D.G.Middleton, A.J.H.Reiter, G.Rosner, B.Schroder, J.Sjogren, D.Sokhan, B.Strandberg

A helium gas scintillator active target for photoreaction measurements

doi: 10.1140/epja/i2015-15123-y
Citations: PlumX Metrics


2014MY01      Phys.Rev. C 89, 035202 (2014)

L.S.Myers, K.Shoniyozov, M.F.Preston, M.D.Anderson, J.R.M.Annand, M.Boselli, W.J.Briscoe, J.Brudvik, J.I.Capone, G.Feldman, K.G.Fissum, K.Hansen, S.S.Henshaw, L.Isaksson, R.Jebali, M.A.Kovash, K.Lewis, M.Lundin, I.J.D.MacGregor, D.G.Middleton, D.E.Mittelberger, M.Murray, A.M.Nathan, S.Nutbeam, G.V.O'Rielly, B.Schroder, B.Seitz, S.C.Stave, H.R.Weller, for the COMPTON @ MAX-lab Collaboration

Compton scattering from 12C using tagged photons in the energy range 65-115 MeV

NUCLEAR REACTIONS 12C(γ, γ), E=65-115 MeV; measured photon spectra, σ(E, θ) at Tagged-Photon Facility of the MAX IV-Lund Laboratory; deduced bound-nucleon polarizabilities. GEANT4 lineshape analysis of Compton-scattered photon spectrum. Phenomenological model. Comparison with previous experimental results.

doi: 10.1103/PhysRevC.89.035202
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetG0037.


2013BA28      Phys.Lett. B 723, 71 (2013)

P.A.Bartolome, A.Mushkarenkov, J.Ahrens, J.R.M.Annand, H.-J.Arends, R.Beck, V.Bekrenev, H.Berghauser, A.Braghieri, W.J.Briscoe, S.N.Cherepnya, S.Costanza, P.Drexler, L.V.Filkov, A.Fix, G.Giardina, D.I.Glazier, D.Hamilton, E.Heid, W.Heil, D.Hornidge, D.Howdle, I.Jaegle, O.Jahn, T.Jude, V.L.Kashevarov, I.Keshelashvili, R.Kondratiev, M.Korolija, J.Krimmer, B.Krusche, S.Kruglov, A.Kulbardis, V.Lisin, K.Livingston, J.Mancell, D.G.Middleton, I.J.D.MacGregor, D.M.Manley, J.C.McGeorge, V.Metag, B.M.K.Nefkens, A.Nikolaev, M.Oberle, M.Ostrick, H.Ortega, P.B.Otte, B.Oussena, P.Pedroni, F.Pheron, S.Prakhov, A.Polonski, F.Rigamonti, M.Romaniuk, G.Rosner, T.Rostomyan, S.Schumann, D.Sober, A.Starostin, I.Supek, M.Thiel, A.Thomas, M.Unverzagt, D.Watts, D.Werthmuller

First measurement of the helicity dependence of 3He photoreactions in the Δ(1232) resonance region

NUCLEAR REACTIONS 3He(γ, X), (γ, π0), (γ, π+), (γ, π-), (γ, 2p), E=150-500 MeV; measured reaction products, Eγ, Iγ; deduced total σ, unpolarized σ, polarized σ. Large acceptance Crystal Ball spectrometer.

doi: 10.1016/j.physletb.2013.04.057
Citations: PlumX Metrics


2013TH10      Eur.Phys.J. A 49, 132 (2013)

M.Thiel, V.Metag, P.Aguar-Bartolome, L.K.Akasoy, J.R.M.Annand, H.J.Arends, K.Bantawa, R.Beck, V.Bekrenev, H.Berghauser, A.Braghieri, W.J.Briscoe, J.Brudvik, S.Cherepnya, M.Dieterle, E.J.Downie, P.Drexler, L.V.Filkov, S.Friedrich, D.I.Glazier, R.Gregor, E.Heid, D.Hornidge, O.Jahn, T.C.Jude, V.L.Kashevarov, I.Keshelashvili, R.Kondratiev, M.Korolija, M.Kotulla, B.Krusche, A.Kulbardis, B.Lemmer, V.Lisin, K.Livingston, S.Lugert, I.J.D.MacGregor, Y.Maghrbi, J.Mancell, D.M.Manley, M.Martinez, J.C.McGeorge, E.F.McNicoll, D.G.Middleton, A.Mushkarenkov, M.Nanova, B.M.K.Nefkens, A.Nikolaev, R.W.Novotny, M.Ostrick, P.Pedroni, F.Pheron, A.Polonski, S.N.Prakhov, J.Robinson, G.Rosner, T.Rostomyan, S.Schumann, M.H.Sikora, A.Starostin, I.Supek, A.Thomas, M.Unverzagt, D.P.Watts, J.Weil, D.Werthmuller, I.Zamboni

In-medium modifications of the ω meson near the production threshold

doi: 10.1140/epja/i2013-13132-6
Citations: PlumX Metrics


2012AN16      Phys.Rev. C 86, 069801 (2012)

M.Anghinolfi, J.Ball, N.A.Baltzell, M.Battaglieri, I.Bedlinskiy, M.Bellis, A.S.Biselli, C.Bookwalter, S.Boiarinov, P.Bosted, V.D.Burkert, D.S.Carman, A.Celentano, S.Chandavar, P.L.Cole, V.Crede, R.De Vita, E.De Sanctis, B.Dey, R.Dickson, D.Doughty, M.Dugger, R.Dupre, H.Egiyan, A.El Alaoui, L.El Fassi, L.Elouadrhiri, P.Eugenio, G.Fedotov, M.Y.Gabrielyan, M.Garcon, G.P.Gilfoyle, K.L.Giovanetti, F.X.Girod, J.T.Goetz, E.Golovatch, M.Guidal, L.Guo, K.Hafidi, H.Hakobyan, D.Heddle, K.Hicks, M.Holtrop, D.G.Ireland, B.S.Ishkhanov, E.L.Isupov, H.S.Jo, P.Khetarpal, A.Kim, W.Kim, V.Kubarovsky, S.V.Kuleshov, H.Y.Lu, I.J.D.MacGregor, N.Markov, M.E.McCracken, B.McKinnon, M.D.Mestayer, C.A.Meyer, M.Mirazita, V.Mokeev, K.Moriya, B.Morrison, A.Ni, S.Niccolai, G.Niculescu, I.Niculescu, M.Osipenko, A.I.Ostrovidov, K.Park, S.Park, S.Anefalos Pereira, S.Pisano, O.Pogorelko, S.Pozdniakov, J.W.Price, G.Ricco, M.Ripani, B.G.Ritchie, P.Rossi, D.Schott, R.A.Schumacher, E.Seder, Y.G.Sharabian, E.S.Smith, D.I.Sober, S.S.Stepanyan, P.Stoler, W.Tang, M.Ungaro, B.Vernarsky, M.F.Vineyard, D.P.Weygand, M.H.Wood, N.Zachariou, B.Zhao

Comment on "Observation of a narrow structure in 1H(γ, K0s)X $via interference with φ-meson production"

doi: 10.1103/PhysRevC.86.069801
Citations: PlumX Metrics


2012MA64      J.Phys.:Conf.Ser. 381, 012024 (2012)

J.Mancell, I.J.D.MacGregor, for the Mainz A2 Collaboration

Eta Photoproduction on the Proton

NUCLEAR REACTIONS 1H(γ, η), E=700-1450 MeV; measured reaction products; deduced σ. Preliminary.

doi: 10.1088/1742-6596/381/1/012024
Citations: PlumX Metrics


2012PH03      Phys.Lett. B 709, 21 (2012)

F.Pheron, J.Ahrens, J.R.M.Annand, H.J.Arends, K.Bantawa, P.A.Bartolome, R.Beck, V.Bekrenev, H.Berghauser, B.Boillat, A.Braghieri, D.Branford, W.J.Briscoe, J.Brudvik, S.Cherepnya, B.Demissie, M.Dieterle, E.J.Downie, P.Drexler, D.I.Glazier, E.Heid, L.V.Filkov, D.Hornidge, D.Howdle, O.Jahn, I.Jaegle, T.C.Jude, V.L.Kashevarov, I.Keshelashvili, R.Kondratiev, M.Korolija, M.Kotulla, A.Kulbardis, S.P.Kruglov, B.Krusche, V.Lisin, K.Livingston, I.J.D.Macgregor, Y.Maghrbi, J.Mancell, D.M.Manley, Z.Marinides, M.Martinez, J.C.Mcgeorge, E.Mcnicoll, D.Mekterovic, V.Metag, S.Micanovic, D.G.Middleton, A.Mushkarenkov, B.M.K.Nefkens, A.Nikolaev, R.Novotny, M.Oberle, M.Ostrick, B.Oussena, P.Pedroni, A.Polonski, S.N.Prakhov, J.Robinson, G.Rosner, T.Rostomyan, S.Schumann, M.H.Sikora, D.I.Sober, A.Starostin, I.Supek, M.Thiel, A.Thomas, M.Unverzagt, D.P.Watts, D.Werthmuller, L.Witthauer, F.Zehr

Coherent photoproduction of η-mesons off 3He - search for η-mesic nuclei

NUCLEAR REACTIONS 3He(γ, η), E=597.8-695.1 MeV; measured products, 3He; deduced σ, σ(E), σ(θ). Data were imported from EXFOR entry G0031.

doi: 10.1016/j.physletb.2012.01.075
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetG0031.


2010MI11      Eur.Phys.J. A 43, 137 (2010)

D.G.Middleton, J.R.M.Annand, C.Barbieri, C.Giusti, P.Grabmayr, T.Hehl, I.J.D.MacGregor, I.Martin, J.C.McGeorge, F.Moschini, F.D.Pacati, M.Schwamb, D.Watts

Knockout of proton-neutron pairs from 16O with electromagnetic probes

NUCLEAR REACTIONS 16O(e, e'np)14N, E=215 MeV; 16O(γ, pn)14N, E=100-800 MeV; measured reaction products; deduced σ. Comparison with Pavia model of two-nucleon knockout predictions.

doi: 10.1140/epja/i2009-10902-7
Citations: PlumX Metrics


2009MI18      Phys.Rev.Lett. 103, 152501 (2009)

D.G.Middleton, J.R.M.Annand, M.A.Antelo, C.Ayerbe, P.Barneo, D.Baumann, J.Bermuth, J.Bernauer, H.P.Blok, R.Bohm, D.Bosnar, M.Ding, M.O.Distler, J.Friedrich, J.Garcia Llongo, D.I.Glazier, J.Golak, W.Glockle, P.Grabmayr, T.Hehl, J.Heim, W.H.A.Hesselink, E.Jans, H.Kamada, G.J.Manas, M.Kohl, L.Lapikas, I.J.D.MacGregor, I.Martin, J.C.McGeorge, H.Merkel, P.Merle, K.Monstad, F.Moschini, U.Muller, A.Nogga, R.Perez-Benito, Th.Pospischil, M.Potokar, G.Rosner, M.Seimetz, R.Skibinski, H.de Vries, Th.Walcher, D.P.Watts, M.Weinriefer, M.Weiss, H.Witala, B.Zihlmann

Investigation of the Exclusive 3He(e, e'pn)1H Reaction

NUCLEAR REACTIONS 3He(e, e'np), E=220-270 MeV; measured Ee, Ie, Ep, Ip and En, In; deduced σ. Continuum Fadeev calculations.

doi: 10.1103/PhysRevLett.103.152501
Citations: PlumX Metrics


2008MI26      Few-Body Systems 44, 171 (2008)

D.G.Middleton, J.R.M.Annand, M.A.Antelo, C.Ayerbe, P.Barneo, D.Baumann, J.Bermuth, J.Bernauer, H.P.Blok, R.Bohm, D.Bosnar, M.Ding, M.O.Distler, J.Friedrich, J.Garcia Llongo, D.I.Glazier, P.Grabmayr, T.Hehl, J.Heim, W.H.A.Hesselink, E.Jans, G.J.Manas, M.Kohl, L.Lapikas, I.J.D.MacGregor, I.Martin, J.C.McGeorge, H.Merkel, P.Merle, K.Monstad, F.Moschini, U.Muller, R.Perez Benito, Th.Pospischil, M.Potokar, G.Rosner, M.Seimitz, H.de Vries, Th.Walcher, D.P.Watts, M.Weinriefer, M.Weiss, B.Zihlmann

3He(e, e'pp) and 3He(e, e'pn) reactions at AmPS and MAMI

NUCLEAR REACTIONS 3He(e, e'2p), (e, e'np), E not given; measured cross sections.

doi: 10.1007/s00601-008-0283-x
Citations: PlumX Metrics


2007BL20      Eur.Phys.J. A 32, 219 (2007)

F.Bloch, J.Ahrens, J.R.M.Annand, R.Beck, L.S.Fog, D.Hornidge, S.Janssen, M.Kotulla, B.Krusche, J.C.McGeorge, I.J.D.MacGregor, J.G.Messchendorp, V.Metag, R.Novotny, R.O.Owens, M.Pfeiffer, M.Rost, R.Sanderson, S.Schadmand, A.Thomas, D.P.Watts

Double pion photoproduction off 40Ca

doi: 10.1140/epja/i2006-10383-2
Citations: PlumX Metrics


2007HA13      Phys.Rev. C 75, 044311 (2007)

N.P.Harrington, D.Branford, K.Fohl, E.Roche, J.R.M.Annand, R.Beck, P.Grabmayr, T.Hehl, D.Hornidge, K.Livingston, J.C.McGeorge, I.J.D.MacGregor, I.Martin, K.Monstad, F.Moschini, A.Reiter, S.Waddell, D.P.Watts, S.Young

Experimental study of the halo nucleus 6He using the 6Li(γ, π+)6He reaction

NUCLEAR REACTIONS 6Li(γ, π+), E=170-220 MeV; measured pion spectra, σ(E, θ). Comparison with model predictions, previous results.

doi: 10.1103/PhysRevC.75.044311
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetM0734.


2007WA12      Phys.Lett. B 647, 88 (2007)

D.P.Watts, J.R.M.Annand, R.Beck, D.Branford, D.I.Glazier, P.Grabmayr, K.Livingston, I.J.D.MacGregor, J.C.McGeorge, R.O.Owens, G.Rosner

Dependence of the 12C(γ(pol), pd)reaction on photon linear polarisation

NUCLEAR REACTIONS 12C(polarized γ, pX), E=170-350 MeV; measured particle spectra, σ(E), asymmetry. 3He(polarized γ, pd), E≈90-350 MeV; analysed asymmetry. Faddeev calculations, three-nucleon force.

doi: 10.1016/j.physletb.2007.02.013
Citations: PlumX Metrics


2006MI22      Eur.Phys.J. A 29, 261 (2006); Erratum Eur.Phys.J. A 30, 469 (2006)

D.G.Middleton, J.R.M.Annand, C.Barbieri, P.Barneo, P.Bartsch, D.Baumann, J.Bermuth, D.Bosnar, H.P.Blok, R.Bohm, M.Ding, M.O.Distler, D.Elsner, J.Friedrich, C.Giusti, D.I.Glazier, P.Grabmayr, S.Grozinger, T.Hehl, J.Heim, W.H.A.Hesselink, E.Jans, F.Klein, M.Kohl, L.Lapikas, I.J.D.MacGregor, I.Martin, J.C.McGeorge, H.Merkel, P.Merle, F.Moschini, U.Muller, Th.Pospischil, G.Rosner, H.Schmieden, M.Seimetz, A.Sule, H.de Vries, Th.Walcher, D.P.Watts, M.Weis, B.Zihlmann

First measurements of the 16O(e, e'pn)14N reaction

NUCLEAR REACTIONS 2H, 16O(e, e'np), E=855 MeV; measured particle spectra. 14N deduced excited states.

doi: 10.1140/epja/i2005-10314-9
Citations: PlumX Metrics


2006MO11      Phys.Rev. C 73, 044611 (2006)

S.A.Morrow, D.Branford, K.Fohl, J.C.McGeorge, J.-O.Adler, K.Hansen, L.Isaksson, M.Lundin, I.J.D.MacGregor, B.Schroder

High-resolution study of the 12C(γ, pγ')11B reaction using a HpGe detector to resolve excited states of 11B through the observation of their γ-ray decays

NUCLEAR REACTIONS 12C(γ, p), E=49.5-70.2 MeV; measured Eγ, Iγ, pγ-coin, angular correlations. 11B deduced transition intensities, branching ratios, level populations.

doi: 10.1103/PhysRevC.73.044611
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetM0689.


2005AH01      Eur.Phys.J. A 23, 113 (2005)

J.Ahrens, V.M.Alexeev, J.R.M.Annand, H.J.Arends, R.Beck, G.Caselotti, S.N.Cherepnya, D.Drechsel, L.V.Filkov, K.Fohl, I.Giller, P.Grabmayr, T.Hehl, D.Hornidge, V.L.Kashevarov, M.Kotulla, D.Krambrich, B.Krusche, M.Lang, J.C.McGeorge, I.J.D.MacGregor, V.Metag, M.Moinester, R.Novotny, M.Pfeiffer, M.Rost, S.Schadmand, S.Scherer, A.Thomas, C.Unkmeir, Th.Walcher

Measurement of the π+-meson polarizabilities via the γp → γπ+n reaction

NUCLEAR REACTIONS 1H(γ, π+γ), E=537-817 MeV; measured Eγ, En, (pion)nγ-coin, σ(θ); deduced pion polarizabilities. Tagged photon beam, comparison with model predictions.

doi: 10.1140/epja/i2004-10056-2
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2005GL03      Eur.Phys.J. A 24, 101 (2005)

D.I.Glazier, M.Seimetz, J.R.M.Annand, H.Arenhovel, M.A.Antelo, C.Ayerbe, P.Bartsch, D.Baumann, J.Bermuth, R.Bohm, D.Bosnar, M.Ding, M.O.Distler, D.Elsner, J.Friedrich, S.Hedicke, P.Jennewein, G.J.Manas, F.H.Klein, F.Klein, M.Kohl, K.W.Krygier, K.Livingston, I.J.D.MacGregor, M.Makek, H.Merkel, P.Merle, D.Middleton, U.Muller, R.Neuhausen, L.Nungesser, M.Ostrick, R.Perez Benito, J.Pochodzalla, Th.Pospischil, M.Potokar, A.Reiter, G.Rosner, J.Sanner, H.Schmieden, A.Sule, Th.Walcher, D.P.Watts, M.Weis, and the A1 Collaboration

Measurement of the electric form factor of the neutron at Q2 = 0.3-0.8 (GeV/c)2

NUCLEAR REACTIONS 2H(polarized e, e'n), E=660, 855, 883 MeV; measured asymmetry, polarization transfer. 1n deduced electric form factor.

doi: 10.1140/epja/i2004-10115-8
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2004KO01      Phys.Lett. B 578, 63 (2004)

M.Kotulla, J.Ahrens, J.R.M.Annand, R.Beck, D.Hornidge, S.Janssen, B.Krusche, J.C.McGeorge, I.J.D.MacGregor, J.G.Messchendorp, V.Metag, R.Novotny, M.Pfeiffer, R.O.Owens, M.Rost, S.Schadmand, D.P.Watts

Double π0 photoproduction off the proton at threshold

NUCLEAR REACTIONS 1H(γ, 2π0), E=300-425 MeV; measured invariant mass spectra, σ(θ), σ. Tagged photons. Comparison with model predictions.

doi: 10.1016/j.physletb.2003.10.056
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2004KR16      Eur.Phys.J. A 22, 277 (2004)

B.Krusche, J.Lehr, J.Ahrens, J.R.M.Annand, R.Beck, F.Bloch, L.S.Fog, D.Hornidge, S.Janssen, M.Kotulla, J.C.McGeorge, I.J.D.MacGregor, J.Messchendorp, V.Metag, U.Mosel, R.Novotny, R.O.Owens, M.Pfeiffer, R.Sanderson, S.Schadmand, D.P.Watts

Photoproduction of π0-mesons from nuclei

NUCLEAR REACTIONS 12C, 40Ca, 93Nb, 208Pb(γ, π0X), E=200-800 MeV; measured missing-energy and missing-mass spectra, σ, σ(E, θ); deduced in-medium effects. Tagged photons, comparison with model predictions, previous results.

doi: 10.1140/epja/i2004-10033-9
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2004PF01      Phys.Rev.Lett. 92, 252001 (2004); Comment Phys.Rev.Lett. 94, 049101 (2005)

M.Pfeiffer, J.Ahrens, J.R.M.Annand, R.Beck, G.Caselotti, S.Cherepnya, K.Fohl, L.S.Fog, D.Hornidge, S.Janssen, V.Kashevarov, R.Kondratiev, M.Kotulla, B.Krusche, J.C.McGeorge, I.J.D.MacGregor, K.Mengel, J.G.Messchendorp, V.Metag, R.Novotny, M.Rost, S.Sack, R.Sanderson, S.Schadmand, A.Thomas, D.P.Watts

Photoproduction of η-Mesic 3He

NUCLEAR REACTIONS 3He(γ, X), E=600-820 MeV; measured η-meson production σ, σ(θ); deduced resonance structure. 3He deduced quasibound η-mesic state energy, width.

doi: 10.1103/PhysRevLett.92.252001
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2003WA01      Phys.Lett. B 553, 25 (2003)

D.P.Watts, J.Ahrens, J.R.M.Annand, R.Beck, D.Branford, P.Grabmayr, T.Hehl, J.D.Kellie, I.J.D.MacGregor, J.C.McGeorge, R.O.Owens

Three-nucleon mechanisms in photoreactions

NUCLEAR REACTIONS 12C(γ, 2np), E=150-800 MeV; measured Ep, missing energy distributions; deduced possible three-nucleon mechanism, other reaction mechanism features. Tagged photons. Comparison with microscopic many-body model predictions.

doi: 10.1016/S0370-2693(02)03186-6
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2002BR38      Phys.Rev. C66, 015208 (2002)

D.Branford, J.F.Arneil, J.A.MacKenzie, K.Fohl, J.Ahrens, J.R.M.Annand, R.Beck, S.Franczuk, P.Grabmayr, S.J.Hall, P.D.Harty, T.Hehl, J.D.Kellie, M.Liang, I.J.D.MacGregor, J.C.McGeorge, A.Natter, S.Oberkirsch, R.O.Owens, C.J.Y.Powrie, D.P.Watts, S.Wunderlich

Investigation of Δ-Medium Effects using the 4He(γ, π+n)3H and 4He(γ, π+p)nnn Reactions

NUCLEAR REACTIONS 4He(γ, π+n), (γ, π+p), E=250-400 MeV; measured missing energy, σ(E, θ) with polarized and unpolarized beams; 12C(γ, π+n), E=260-380 MeV; analyzed data; deduced Δ-medium effects. Tagged photons, comparisons with model predictions.

doi: 10.1103/PhysRevC.66.015208
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2002HE08      Eur.Phys.J. A 13, 493 (2002)

V.Hejny, J.Weiss, P.Achenbach, J.Ahrens, J.R.M.Annand, R.Beck, M.Kotulla, B.Krusche, V.Kuhr, R.Leukel, I.J.D.MacGregor, V.Metag, R.Novotny, V.Olmos de Leon, F.Rambo, A.Schmidt, M.Schumacher, U.Siodlaczek, H.Stroher, F.Wissmann, M.Wolf

Threshold Enhancement in η Photoproduction from 2H and 4He

NUCLEAR REACTIONS 2H, 4He(γ, X), E ≈ 590-680 MeV; measured η meson production σ, σ(θ), momentum distributions; deduced enhancement relative to model prediction. Tagged photons.

doi: 10.1007/s10050-002-8779-0
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2002ME22      Phys.Rev.Lett. 89, 222302 (2002)

J.G.Messchendorp, S.Janssen, M.Kotulla, J.Ahrens, J.R.H.Annand, R.Beck, F.Bloch, G.Caselotti, L.Fog, D.Hornidge, B.Krusche, W.Langgartner, J.C.McGeorge, I.J.D.MacGregor, K.Mengel, V.Metag, R.Novotny, R.O.Owens, M.Pfeiffer, S.Sack, R.Sanderson, S.Schadmand

In-Medium Modifications of the ππ Interaction in Photon-Induced Reactions

NUCLEAR REACTIONS 1H, 12C, Pb(γ, 2π0X), (γ, π0π+X), (γ, π0π-X), E=400-460 MeV; measured two-pion mass distributions, σ(E); deduced in-medium modification features. Comparison with model predictions.

doi: 10.1103/PhysRevLett.89.222302
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2001BO38      Phys.Rev. C64, 031601 (2001)

M.J.Boland, M.A.Garbutt, R.P.Rassool, M.N.Thompson, A.J.Bennett, J.W.Jury, J.-O.Adler, B.Schroder, D.Nilsson, K.Hansen, M.Karlsson, M.Lundin, I.J.D.MacGregor

Excitations in the Halo Nucleus 6He following the 7Li(γ, p)6He Reaction

NUCLEAR REACTIONS 7Li(γ, p), E=50-70 MeV; measured proton spectra, σ(θ). 6He deduced resonance energy, width. Tagged photons. Comparison with cluster model predictions.

doi: 10.1103/PhysRevC.64.031601
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2001PO19      Phys.Rev. C64, 034602 (2001)

C.J.Y.Powrie, J.C.McGeorge, I.J.D.MacGregor, J.Ahrens, J.R.M.Annand, J.F.Arneil, R.Beck, D.Branford, S.Franczuk, D.I.Glazier, P.Grabmayr, S.J.Hall, T.Hehl, P.D.Harty, D.G.Ireland, J.D.Kellie, K.Livingston, F.A.Natter, S.Oberkirsch, R.O.Owens, J.Ryckebusch, M.Sauer, A.Settele, D.P.Watts

Polarized Photon Measurements of the 12C(γ(pol), pp) and 12C(γ(pol), pn) Reactions for Eγ = 160-350 MeV

NUCLEAR REACTIONS 12C(polarized γ, 2p), (polarized γ, np), E=160-350 MeV; measured parallel and perpendicular yields, photon asymmetry, σ(θ), missing energy dependence; deduced reaction mechanism features. Tagged photons. Comparison with model predictions.

doi: 10.1103/PhysRevC.64.034602
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2000BR01      Phys.Rev. C61, 014603 (2000)

D.Branford, J.A.MacKenzie, F.X.Lee, J.Ahrens, J.R.M.Annand, R.Beck, G.E.Cross, T.Davinson, P.Grabmayr, S.J.Hall, P.D.Harty, T.Hehl, D.G.Johnstone, J.D.Kellie, T.Lamparter, M.Liang, I.J.D.MacGregor, J.C.McGeorge, R.O.Owens, M.Sauer, R.Schneider, A.C.Shotter, K.Spaeth, D.P.Watts, P.J.Woods, L.E.Wright, T.T.Yau

Nuclear Pion Photoproduction in the Δ Resonance Region

NUCLEAR REACTIONS 12C(γ, π+n), E=260, 300, 340, 380 MeV; measured σ(θ1, θ2), missing energy spectra; deduced Δ resonance role. DWIA analysis. Tagged photons.

doi: 10.1103/PhysRevC.61.014603
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2000WA20      Phys.Rev. C62, 014616 (2000)

D.P.Watts, I.J.D.MacGregor, J.Ahrens, J.R.M.Annand, R.Beck, D.Branford, P.Grabmayr, S.J.Hall, P.D.Harty, T.Hehl, J.D.Kellie, T.Lamparter, M.Liang, J.A.MacKenzie, S.J.McAllister, J.C.McGeorge, R.O.Owens, M.Sauer, R.Schneider, G.J.Wagner, T.T.-H.Yau

The 12C(γ, NN) Reaction Studied Over a Wide Kinematic Range

NUCLEAR REACTIONS 12C(γ, np), (γ, 2p), E=150-700 MeV; measured missing energy, recoil momentum distributions; deduced role of short-range correlations, other reaction mechanism features. Tagged photons. Comparisons with model predictions.

doi: 10.1103/PhysRevC.62.014616
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1999FR32      Phys.Lett. 450B, 332 (1999)

S.Franczuk, I.J.D.MacGregor, J.Ahrens, J.R.M.Annand, J.F.Arneil, R.Beck, D.Branford, P.Grabmayr, S.J.Hall, T.Hehl, P.D.Harty, D.G.Ireland, J.D.Kellie, K.Livingston, J.C.McGeorge, F.A.Natter, S.Oberkirsch, R.O.Owens, C.J.Y.Powrie, J.Ryckebusch, M.Sauer, A.Settele, D.P.Watts

12C(γ(pol), pn) Photon Asymmetry for Eγ = 180-340 MeV

NUCLEAR REACTIONS 12C(polarized γ, np), E=180-340 MeV; measured proton, neutron spectra, angular distributions; deduced photon asymmetry. Tagged photons. Comparison with deuterium target data.

doi: 10.1016/S0370-2693(99)00184-7
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1999IR01      Phys.Rev. C59, 3297 (1999)

D.G.Ireland, I.J.D.MacGregor, J.Ryckebusch

Interpretation of Two-Nucleon Photoemission Data

NUCLEAR REACTIONS 12C(γ, 2p), (γ, np), E=135 MeV; calculated σ(θ), momentum spectra. Monte Carlo approach, binning effects discussed. Comparison with data.

doi: 10.1103/PhysRevC.59.3297
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1999MC06      Phys.Rev. C60, 044610 (1999)

S.J.McAllister, J.C.McGeorge, I.J.D.MacGregor, J.R.M.Annand, S.J.Hall, P.D.Harty, J.D.Kellie, G.J.Miller, R.O.Owens, D.P.Watts, T.T.-H.Yau, D.Branford, J.A.MacKenzie, M.Liang, P.Grabmayr, T.Hehl, T.Lamparter, M.Sauer, R.Schneider, J.Ahrens, R.Beck

The (γ, pd) Reaction in 12C

NUCLEAR REACTIONS 12C(γ, pd), E=150-400 MeV; measured particle spectra, σ(θ), recoil momentum distributions; deduced reaction mechanism features. Tagged photon beam.

doi: 10.1103/PhysRevC.60.044610
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1998HA01      Phys.Rev. C57, 123 (1998)

P.D.Harty, I.J.D.MacGregor, J.Ahrens, J.R.M.Annand, I.Anthony, R.Beck, D.Branford, G.E.Cross, T.Davinson, P.Grabmayr, S.J.Hall, T.Hehl, J.D.Kellie, T.Lamparter, J.A.MacKenzie, J.C.McGeorge, G.J.Miller, R.O.Owens, M.Sauer, R.Schneider, K.Spaeth

Investigation of Multiparticle Final States in 12C Photoreactions

NUCLEAR REACTIONS 12C(γ, np), (γ, 2p), (γ, 3p), (γ, pπ), (γ, 2pπ), E=250-600 MeV; measured σ vs missing energy; deduced reaction mechanism features. Tagged photons. Valencia model calculations.

doi: 10.1103/PhysRevC.57.123
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1998MA02      Phys.Rev.Lett. 80, 245 (1998)

I.J.D.MacGregor, T.T-H.Yau, J.Ahrens, J.R.M.Annand, R.Beck, D.Branford, P.Grabmayr, S.J.Hall, P.D.Harty, T.Hehl, J.D.Kellie, T.Lamparter, M.Liang, J.A.MacKenzie, S.McAllister, J.C.McGeorge, R.O.Owens, J.Ryckebusch, M.Sauer, R.Schneider, D.P.Watts

Mechanisms in the 12C(γ, pn) and (γ, pp) Reactions

NUCLEAR REACTIONS 12C(γ, np), (γ, 2p), E=120-400 MeV; measured σ(Eγ, θ(p)); deduced Δ-resonance dependence, reaction mechanism features.

doi: 10.1103/PhysRevLett.80.245
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1998YA05      Eur.Phys.J. A 1, 241 (1998)

T.T.-H.Yau, I.J.D.MacGregor, J.Ahrens, J.R.M.Annand, R.Beck, D.Branford, P.Grabmayr, S.J.Hall, P.D.Harty, T.Hehl, D.G.Ireland, J.D.Kellie, T.Lamparter, K.Livingston, M.Liang, J.A.MacKenzie, S.McAllister, J.C.McGeorge, R.O.Owens, M.Sauer, R.Schneider, D.P.Watts

The Angular Distribution of the 12C(γ, pn) Reaction for E(γ) = 120 - 150 MeV

NUCLEAR REACTIONS 12C(γ, np), E=120-150 MeV; measured σ(θ(n), θ(p)); deduced pion-, rho-exchange roles. Comparison with other reactions.

doi: 10.1007/s100500050055
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1997BE04      Phys.Rev.Lett. 78, 606 (1997); Erratum Phys.Rev.Lett. 79, 4515 (1997)

R.Beck, H.P.Krahn, J.Ahrens, H.J.Arends, G.Audit, A.Braghieri, N.d'Hose, S.J.Hall, V.Isbert, J.D.Kellie, I.J.D.MacGregor, P.Pedroni, T.Pinelli, G.Tamas, Th.Walcher, S.Wartenberg

Measurement of the E2/M1 Ratio in the N → Δ Transition using the Reaction p(γ(pol), p)π0

NUCLEAR REACTIONS 1H(polarized γ, π0), E=270-420 MeV; measured σ(θ), photon asymmetries, σ(θp); deduced E2/M1 ratio in N → δ transition.

doi: 10.1103/PhysRevLett.78.606
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1997LI30      Phys.Lett. 411B, 244 (1997)

M.Liang, D.Branford, T.Davinson, D.Johnstone, J.A.MacKenzie, A.C.Shotter, J.R.M.Annand, S.J.Hall, P.D.Harty, J.D.Kellie, I.J.D.MacGregor, J.C.McGeorge, G.J.Miller, R.O.Owens, T.Yau, P.Grabmayr, T.Hehl, J.Leypoldt, T.Lamparter, A.Mondry, M.Sauer, R.Schneider, K.Spaeth, J.Ahrens, R.Beck

12C(γ, π+n) and 12C(γ, π+p) Reaction Across the Δ Resonance Region

NUCLEAR REACTIONS 12C(γ, nπ+), (γ, pπ+), E=150-790 MeV bremsstrahlung; measured σ(θ, Eγ, Eπ); deduced final state interactions. Valencia model.

doi: 10.1016/S0370-2693(97)01005-8
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1996FU04      Phys.Lett. 368B, 20 (1996)

M.Fuchs, J.Ahrens, G.Anton, R.Averbeck, R.Beck, A.M.Bernstein, A.R.Gabler, F.Harter, P.D.Harty, S.Hlavac, B.Krusche, I.J.D.MacGregor, V.Metag, R.Novotny, R.O.Owens, J.Peise, M.Robig-Landau, A.Schubert, R.S.Simon, H.Stroher, V.Tries

Neutral Pion Photoproduction from the Proton Near Threshold

NUCLEAR REACTIONS 1H(γ, π0), E=140-270 MeV; measured σ(θ), σ(E); deduced s-, p-wave multipoles vs E. Tagged photon beam. Low energy theorem, chiral perturbation theory analyses.

doi: 10.1016/0370-2693(95)01488-8
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1996GR05      Phys.Lett. 370B, 17 (1996)

P.Grabmayr, J.Ahrens, J.R.M.Annand, I.Anthony, D.Branford, G.E.Cross, T.Davinson, S.J.Hall, P.D.Harty, T.Hehl, J.D.Kellie, T.Lamparter, I.J.D.MacGregor, J.A.MacKenzie, J.M.McGeorge, G.J.Miller, R.O.Owens, M.Sauer, R.Schneider, K.Spaeth, G.J.Wagner

Excitation Functions for the Two-Nucleon Photoaborption in 6Li

NUCLEAR REACTIONS 6Li(γ, np), (γ, 2p), E=114-600 MeV; measured σ(θ(12)) vs Eγ, missing energy spectra; deduced various photon absorption mechanisms relative importance. Quasideuteron model role in (γ, np).

doi: 10.1016/0370-2693(95)01581-7
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1996HA17      Phys.Lett. 380B, 247 (1996)

P.D.Harty, I.J.D.MacGregor, P.Grabmayr, J.Ahrens, J.R.M.Annand, I.Anthony, R.Beck, D.Branford, G.E.Cross, T.Davinson, S.J.Hall, T.Hehl, J.D.Kellie, T.Lamparter, J.A.MacKenzie, J.C.McGeorge, G.J.Miller, R.O.Owens, M.Sauer, R.Schneider, K.Spaeth

The Contribution of 2N Photon Absorption in 12C(γ, 2N) Reactions for E(γ) = 150-400 MeV

NUCLEAR REACTIONS 12C(γ, np), (γ, 2p), E=150-400 MeV; measured yield vs missing energy, recoil momentum spectra; deduced photon absorption mechanism.

doi: 10.1016/0370-2693(96)00508-4
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1996LA15      Z.Phys. A355, 1 (1996)

Th.Lamparter, J.Ahrens, J.R.M.Annand, I.Anthony, R.Beck, D.Branford, G.E.Cross, T.Davinson, P.Grabmayr, S.J.Hall, P.D.Harty, T.Hehl, J.D.Kellie, I.J.D.MacGregor, J.A.MacKenzie, J.C.McGeorge, G.J.Miller, R.O.Owens, M.Sauer, R.Schneider, K.Spaeth, G.J.Wagner

On Photonuclear Reaction Mechanisms at Intermediate Energies

NUCLEAR REACTIONS 12C(γ, np), (γ, 2p), E=114-600 MeV; measured missing energy spectra. Valencia model, Monte Carlo simulations.

doi: 10.1007/s002180050069
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1996MA01      Phys.Rev. C53, 41 (1996)

M.Mac Cormick, G.Audit, N.d'Hose, L.Ghedira, V.Isbert, S.Kerhoas, L.Y.Murphy, G.Tamas, P.A.Wallace, S.Altieri, A.Braghieri, P.Pedroni, T.Pinelli, J.Ahrens, R.Beck, J.R.M.Annand, R.A.Crawford, J.D.Kellie, I.J.D.MacGregor, B.Dolbilkin, A.Zabrodin

Total Photoabsorption Cross Sections for 1H, 2H, and 3He from 200 to 800 MeV

NUCLEAR REACTIONS 1,2H, 3He(γ, X), E=200-800 MeV; measured total photoabsorption σ(E); deduced nucleon resonance changes vs target mass.

doi: 10.1103/PhysRevC.53.41
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1996MA20      Phys.Rev. C54, R6 (1996)

J.A.MacKenzie, D.Branford, J.Ahrens, J.R.M.Annand, R.Beck, G.E.Cross, T.Davinson, P.Grabmayr, S.J.Hall, P.D.Harty, T.Hehl, D.G.Johnstone, J.D.Kellie, T.Lamparter, M.Liang, I.J.D.MacGregor, J.C.McGeorge, R.O.Owens, M.Sauer, R.Schneider, A.C.Shotter, K.Spaeth, P.J.Woods, T.Yau

Quasifree π+ Production Studied using the 12C(γ, π+n)11B Reaction in the Δ(1232) Resonance Region

NUCLEAR REACTIONS 12C(γ, nπ+), E=280-320 MeV; measured σ(θ(π), θ(n)). Model comparison.

doi: 10.1103/PhysRevC.54.R6
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1996MA88      Nucl.Instrum.Methods Phys.Res. A382, 479 (1996)

I.J.D.MacGregor, J.R.M.Annand, D.Branford, G.E.Cross, P.Grabmayr, P.D.Harty, T.Hehl, T.Lamparter, J.A.MacKenzie, S.McAllister, J.C.McGeorge, R.O.Owens, R.Schneider, P.Terzoudi, D.P.Watts, T.T.-H.Yau

PiP - A Large Solid Angle Scintillation Telescope for Detecting Protons and Pions

doi: 10.1016/S0168-9002(96)00844-3
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1996RO06      Phys.Lett. 373B, 45 (1996)

M.Robig-Landau, J.Ahrens, G.Anton, R.Averbeck, R.Beck, M.Fuchs, A.R.Gabler, F.Harter, P.D.Harty, V.Hejny, B.Krusche, I.J.D.MacGregor, J.C.McGeorge, V.Metag, R.Novotny, J.Peise, A.Schubert, R.S.Simon, H.Stroher

Near Threshold Photoproduction of η-mesons from Complex Nuclei

NUCLEAR REACTIONS 12C, 40Ca, 93Nb, Pb(γ, X), E=790 MeV; measured total, differential σ for η production; deduced absorption by nucleon σ, length in nuclear matter.

doi: 10.1016/0370-2693(96)00125-6
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1996WI10      Z.Phys. A355, 169 (1996)

R.Wichmann, J.Ahrens, H.J.Arends, R.Beck, G.Galler, A.Hunger, A.Kraus, I.J.D.MacGregor, J.Peise, B.Seitz, M.Schmitz, M.Schneider, O.Selke, M.Schumacher, F.Wissmann

Photoemission of Protons from 4He in the Δ-Resonance Region

NUCLEAR REACTIONS 4He(γ, p), E=130-525 MeV; measured proton spectra; deduced three separate reaction channels.

doi: 10.1007/s002180050095
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1995CR04      Nucl.Phys. A593, 463 (1995)

G.E.Cross, I.J.D.MacGregor, J.C.McGeorge, J.Ahrens, I.Anthony, J.R.M.Annand, R.Beck, D.Branford, T.Davinson, P.Grabmayr, S.J.Hall, P.D.Harty, T.Hehl, J.D.Kellie, T.Lamparter, L.Machenil, J.A.MacKenzie, G.J.Miller, R.O.Owens, J.Ryckebusch, M.Sauer, R.Schneider, K.Spaeth, M.Vanderhaeghen

Proton Photoproduction from 12C

NUCLEAR REACTIONS 12C(γ, p), E=200-500 MeV; measured σ(θ). 12C(γ, np), (γ, 2p), E=300 MeV; measured σ(θ, E(nucleon)); deduced reaction mechanism. Tagged photon beam.

doi: 10.1016/0375-9474(95)00318-U
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1995HA03      Phys.Rev. C51, 1982 (1995)

P.D.Harty, J.C.McGeorge, I.J.D.MacGregor, R.O.Owens, J.R.M.Annand, I.Anthony, G.I.Crawford, S.N.Dancer, S.J.Hall, J.D.Kellie, G.J.Miller, B.Schoch, R.Beck, H.Schmieden, J.M.Vogt, J.Ryckebusch

12C(γ, p)11B Cross Section from 80 to 157 MeV

NUCLEAR REACTIONS 12C(γ, p), E=80-157 MeV bremsstrahlung; measured σ(θ) vs E. 12C deduced momentum density distributions. Tagged beam, photon tagging spectrometer.

doi: 10.1103/PhysRevC.51.1982
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetM0376.


1995MC02      Phys.Rev. C51, 1967 (1995)

J.C.McGeorge, I.J.D.MacGregor, S.N.Dancer, J.R.M.Annand, I.Anthony, G.I.Crawford, S.J.Hall, P.D.Harty, J.D.Kellie, G.J.Miller, R.O.Owens, P.A.Wallace, D.Branford, A.C.Shotter, B.Schoch, R.Beck, H.Schmieden, J.M.Vogt

(γ, 2N) Reaction in 12C

NUCLEAR REACTIONS 12C(γ, np), (γ, 2p), E=80-157 MeV bremsstrahlung; measured σ vs missing energy, 2N pair momentum distributions; deduced (γ, pn) reaction mechanism. Tagged beam, photon tagging spectrometer.

doi: 10.1103/PhysRevC.51.1967
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1995MI04      Nucl.Phys. A586, 125 (1995)

G.J.Miller, J.C.McGeorge, J.R.M.Annand, G.I.Crawford, V.Holliday, I.J.D.MacGregor, R.O.Owens, J.Ryckebusch, J.-O.Adler, B.-E.Andersson, L.Isaksson, B.Schroder

The 16O(γ, p) Reaction at E(γ) = 60 and 72 MeV

NUCLEAR REACTIONS 16O(γ, p), E=60, 72 MeV; measured σ(Ep, θp). Tagged bremsstrahlung beam. Comparison with microscopic Hartree-Fock RPA calculations.

doi: 10.1016/0375-9474(94)00535-U
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetM0386.


1993DO08      Nucl.Phys. A559, 347 (1993)

S.M.Doran, I.J.D.MacGregor, J.R.M.Annand, I.Anthony, S.N.Dancer, S.J.Hall, J.D.Kellie, J.C.McGeorge, G.J.Miller, R.O.Owens, P.A.Wallace, B.Schoch, H.Schmieden, S.Klein

The 4He(γ, 2N) Reaction Measured with Tagged Photons

NUCLEAR REACTIONS 4He(γ, np), (γ, 2p), E=80-131 MeV; measured yield, recoil momentum; deduced σ. Natural target, tagged photons. Monte Carlo calculations.

doi: 10.1016/0375-9474(93)90158-T
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetM0556.


1993HA12      Phys.Rev. C47, 2185 (1993)

P.D.Harty, I.J.D.MacGregor, J.C.McGeorge, S.N.Dancer, R.O.Owens

Neutron Propagation in 12C for Energies 20 to 45 MeV

NUCLEAR REACTIONS 12C(γ, p), (γ, np), E=80-157 MeV; measured missing energy spectra. 12C deduced neutron transmission. Tagged beam.

doi: 10.1103/PhysRevC.47.2185
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1993SC23      Phys.Lett. 314B, 284 (1993)

H.Schmieden, I.J.D.MacGregor, R.O.Owens, B.Schoch, J.R.M.Annand, R.Beck, S.M.Doran, S.J.Hall, J.D.Kellie, J.C.McGeorge, J.M.Vogt

Scaling of the 4He(γ, p)t Reaction in the E(γ) = 80-160 MeV Region

NUCLEAR REACTIONS 4He(γ, p), E=81-158; measured missing energy spectra, σ(θ); deduced photon absorption mechanism. Modified quasideuteron model. Tagged photon beam.

doi: 10.1016/0370-2693(93)91237-H
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetM0555.


1992MA30      J.Phys.(London) G18, 1195 (1992)

I.J.D.MacGregor, A.Johnston, J.S.Ewing

Study of the M1 Isovector Strength in 28Si

NUCLEAR REACTIONS 28Si(e, e'), E=59-150 MeV; measured σ(E, θ). 28Si levels deduced form factors. Natural target. Shell model calculations.

doi: 10.1088/0954-3899/18/7/009
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1991MA39      Nucl.Phys. A533, 269 (1991)

I.J.D.MacGregor, J.R.M.Annand, I.Anthony, S.N.Dancer, S.M.Doran, S.J.Hall, J.D.Kellie, J.C.McGeorge, G.J.Miller, R.O.Owens, P.A.Wallace, B.Schoch, H.Schmieden, J.M.Vogt, S.Klein

The 16O(γ, 2n) Reaction Measured with Tagged Photons

NUCLEAR REACTIONS 16O(γ, np)(γ, 2p), E=80-131 MeV; measured yield versus missing energy, recoil momentum; deduced reaction mechanism, σ. Quasideuteron model, phase-space Monte Carlo calculations. Natural targets, tagged photons.

doi: 10.1016/0375-9474(91)90490-W
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1991WA25      Nucl.Phys. A532, 617 (1991)

P.A.Wallace, J.R.M.Annand, I.Anthony, G.I.Crawford, S.N.Dancer, S.M.Doran, S.J.Hall, J.D.Kellie, J.C.McGeorge, I.J.D.MacGregor, G.J.Miller, R.O.Owens, J.Vogt, B.Schoch, D.Branford

Differential Cross Section for the Reaction 2H(γ, p) from 133 to 158 MeV

NUCLEAR REACTIONS 2H(γ, p), E=133-158 MeV; measured absolute σ(E, θp) for θ(p)=30°-150°.

doi: 10.1016/0375-9474(91)90600-B
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetM0564.


1990SO06      Nucl.Phys. A517, 473 (1990)

K.C.So, K.Min, L.Y.Murphy, E.J.Winhold, M.Yamazaki, P.Yergin, R.W.Gothe, B.Schoch, C.Bennhold, L.Tiator, S.J.Hall, J.D.Kellie, I.J.D.MacGregor, R.O.Owens, D.Branford

Spin-Isospin Excitation in 12C(γ, π+)12B(*) using Tagged Photons

NUCLEAR REACTIONS 12C(γ, π+), E=176-182 MeV; measured σ(Eπ, θπ); deduced photopion production σ(θ). 12B deduced levels. Natural target, tagged photon beam.

doi: 10.1016/0375-9474(90)90212-5
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1989GO03      Nucl.Instrum.Methods Phys.Res. A276, 233 (1989)

R.W.Gothe, R.Beck, D.Irmscher, J.Goebel, B.Schoch, J.M.Vogt, K.Min, L.Y.Murphy, K.So, E.J.Winhold, M.Yamazaki, P.F.Yergin, S.J.Hall, J.D.Kellie, I.J.D.MacGregor, D.Branford

Detection of Low Energy Pions at a Tagged Photon Beam

NUCLEAR REACTIONS 12C(γ, π+), E ≈ 183 MeV; measured pion spectra. Tagged photon beam.

doi: 10.1016/0168-9002(89)90638-4
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1988DA16      Phys.Rev.Lett. 61, 1170 (1988)

S.N.Dancer, I.J.D.MacGregor, J.R.M.Annand, I.Anthony, G.I.Crawford, S.J.Hall, J.D.Kellie, J.C.McGeorge, R.O.Owens, P.A.Wallace, D.Branford, S.V.Springham, A.C.Shotter, B.Schoch, J.M.Vogt, R.Beck, G.Liesenfeld

Investigation of the 12C(γ, pn) Reaction using Tagged Photons

NUCLEAR REACTIONS 12C(γ, np), E=83-133 MeV; measured missing mass spectra; deduced reaction mechanism. Tagged photon beam.

doi: 10.1103/PhysRevLett.61.1170
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1984MA08      Nucl.Phys. A412, 1 (1984)

I.J.D.Macgregor, A.Johnston, J.S.Ewing

Electron Scattering Measurements of Inelastic M3 Transitions

NUCLEAR REACTIONS 24Mg, 28Si(e, e'), E=82-160 MeV; measured σ(E, θ). 24Mg, 28Si levels deduced form factors. Enriched, natural targets. Shell model calculations.

doi: 10.1016/0375-9474(84)90382-8
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