1. On the extraction of weak transition strengths via the (3He,t) reaction at 420 MeV
- Author
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R G T, Zegers, T, Adachi, H, Akimune, Sam M, Austin, A M, van den Berg, B A, Brown, Y, Fujita, M, Fujiwara, S, Galès, C J, Guess, M N, Harakeh, H, Hashimoto, K, Hatanaka, R, Hayami, G W, Hitt, M E, Howard, M, Itoh, T, Kawabata, K, Kawase, M, Kinoshita, M, Matsubara, K, Nakanishi, S, Nakayama, S, Okumura, T, Ohta, Y, Sakemi, Y, Shimbara, Y, Shimizu, C, Scholl, C, Simenel, Y, Tameshige, A, Tamii, M, Uchida, T, Yamagata, M, Yosoi, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), National Superconducting Cyclotron Laboratory (NSCL), Michigan State University [East Lansing], Michigan State University System-Michigan State University System, Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)
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FOS: Physical sciences ,21.60.Cs, 24.50.+g, 25.40.Kv, 25.55.Kr, 25.60.Lg, 27.30.+t ,Nuclear Experiment (nucl-ex) ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] ,Nuclear Experiment - Abstract
Differential cross sections for transitions of known weak strength were measured with the (3He,t) reaction at 420 MeV on targets of 12C, 13C, 18O, 26Mg, 58Ni, 60Ni, 90Zr, 118Sn, 120Sn and 208Pb. Using this data, it is shown the proportionalities between strengths and cross sections for this probe follow simple trends as a function of mass number. These trends can be used to confidently determine Gamow-Teller strength distributions in nuclei for which the proportionality cannot be calibrated via beta-decay strengths. Although theoretical calculations in distorted-wave Born approximation overestimate the data, they allow one to understand the main experimental features and to predict deviations from the simple trends observed in some of the transitions., 4 pages, 2 figures
- Published
- 2007
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