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Title: High-resolution study of the {sup 9}Be({sup 3}He,t){sup 9}B reaction up to the {sup 9}B triton threshold

Abstract

A high-energy-resolution {sup 9}Be({sup 3}He,t){sup 9}B charge-exchange reaction was performed around a scattering angle of 0 deg. and at an intermediate incident energy of 140 MeV/nucleon for the study of precise Gamow-Teller (GT) transition strengths. The energy resolution of 30 keV allowed a precise deconvolution of the spectrum and the determination of angular distributions of cross sections, excitation energies, and decay widths. The GT strength of 10 states has been determined for the first time using the GT strength of the analogous {beta} decays of {sup 9}Li and {sup 9}C as standards. The large difference between the GT strengths going to the low-lying T=1/2 and the highly excited T=3/2 states is interpreted as a result of their different spatial structures. The obtained GT strength distribution is compared to the results of a (p,n) experiment with lower resolution performed in the 1980s. In particular, the width of the 16.8 MeV, J{sup {pi}=}(5/2{sup +}) state has been determined for the first time.

Authors:
;  [1]; ;  [2];  [2];  [3];  [4]; ; ; ; ; ;  [5];  [5];  [6];  [7];  [5];  [6];  [8];  [6] more »;  [9];  [6];  [8];  [10] « less
  1. Institut fuer Kernphysik, Universitaet zu Koeln, 50937 Koeln (Germany)
  2. Department of Physics, Osaka University, Toyonaka, Osaka 560-0043 (Japan)
  3. (Netherlands)
  4. GSI Helmholtzzentrum fuer Schwerionenforschung GmbH, D-64291 Darmstadt (Germany)
  5. Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047 (Japan)
  6. (Japan)
  7. Center for Nuclear Study, University of Tokyo, RIKEN Campus, Wako, Tokyo 351-0198 (Japan)
  8. NSCL, Michigan State University, East Lansing, Michigan 48824-1321 (United States)
  9. Department of Physics, Kyoto University, Sakyo, Kyoto 606-8502 (Japan)
  10. (United States)
Publication Date:
OSTI Identifier:
21596554
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 84; Journal Issue: 1; Other Information: DOI: 10.1103/PhysRevC.84.014308; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ANGULAR DISTRIBUTION; BERYLLIUM 9 TARGET; BORON 9; CARBON 9; CHARGE-EXCHANGE REACTIONS; CROSS SECTIONS; ENERGY RESOLUTION; EXCITATION; GAMOW-TELLER RULES; HELIUM 3 REACTIONS; LITHIUM 9; MEV RANGE 100-1000; NUCLEAR DECAY; NUCLEONS; SCATTERING; SPECTRA; TRITONS; ALPHA DECAY RADIOISOTOPES; BARYONS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; BORON ISOTOPES; CARBON ISOTOPES; CHARGED PARTICLES; CHARGED-PARTICLE REACTIONS; DECAY; DISTRIBUTION; ELEMENTARY PARTICLES; ENERGY RANGE; ENERGY-LEVEL TRANSITIONS; EVEN-ODD NUCLEI; FERMIONS; HADRONS; ISOTOPES; LIGHT NUCLEI; LITHIUM ISOTOPES; MEV RANGE; MILLISECONDS LIVING RADIOISOTOPES; NUCLEAR REACTIONS; NUCLEI; ODD-EVEN NUCLEI; RADIOISOTOPES; RESOLUTION; TARGETS

Citation Formats

Scholl, C., Brentano, P. von, Fujita, Y., Fujita, H., Adachi, T., Kernfysisch Versneller Instituut, 9747 AA Groningen, Gorska, M., Hashimoto, H., Hatanaka, K., Ohta, T., Shimizu, Y., Tameshige, Y., Tamii, A., Matsubara, H., Center for Nuclear Study, University of Tokyo, RIKEN Campus, Wako, Tokyo 351-0198, Nakanishi, K., Sakemi, Y., CYRIC, Tohoku University, Sendai, Shimbara, Y., RIKEN Nishina Center, Wako, Tokyo 351-0198, Yosoi, M., Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Zegers, R. G. T., and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824. High-resolution study of the {sup 9}Be({sup 3}He,t){sup 9}B reaction up to the {sup 9}B triton threshold. United States: N. p., 2011. Web. doi:10.1103/PHYSREVC.84.014308.
Scholl, C., Brentano, P. von, Fujita, Y., Fujita, H., Adachi, T., Kernfysisch Versneller Instituut, 9747 AA Groningen, Gorska, M., Hashimoto, H., Hatanaka, K., Ohta, T., Shimizu, Y., Tameshige, Y., Tamii, A., Matsubara, H., Center for Nuclear Study, University of Tokyo, RIKEN Campus, Wako, Tokyo 351-0198, Nakanishi, K., Sakemi, Y., CYRIC, Tohoku University, Sendai, Shimbara, Y., RIKEN Nishina Center, Wako, Tokyo 351-0198, Yosoi, M., Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Zegers, R. G. T., & Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824. High-resolution study of the {sup 9}Be({sup 3}He,t){sup 9}B reaction up to the {sup 9}B triton threshold. United States. doi:10.1103/PHYSREVC.84.014308.
Scholl, C., Brentano, P. von, Fujita, Y., Fujita, H., Adachi, T., Kernfysisch Versneller Instituut, 9747 AA Groningen, Gorska, M., Hashimoto, H., Hatanaka, K., Ohta, T., Shimizu, Y., Tameshige, Y., Tamii, A., Matsubara, H., Center for Nuclear Study, University of Tokyo, RIKEN Campus, Wako, Tokyo 351-0198, Nakanishi, K., Sakemi, Y., CYRIC, Tohoku University, Sendai, Shimbara, Y., RIKEN Nishina Center, Wako, Tokyo 351-0198, Yosoi, M., Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047, Zegers, R. G. T., and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824. Fri . "High-resolution study of the {sup 9}Be({sup 3}He,t){sup 9}B reaction up to the {sup 9}B triton threshold". United States. doi:10.1103/PHYSREVC.84.014308.
@article{osti_21596554,
title = {High-resolution study of the {sup 9}Be({sup 3}He,t){sup 9}B reaction up to the {sup 9}B triton threshold},
author = {Scholl, C. and Brentano, P. von and Fujita, Y. and Fujita, H. and Adachi, T. and Kernfysisch Versneller Instituut, 9747 AA Groningen and Gorska, M. and Hashimoto, H. and Hatanaka, K. and Ohta, T. and Shimizu, Y. and Tameshige, Y. and Tamii, A. and Matsubara, H. and Center for Nuclear Study, University of Tokyo, RIKEN Campus, Wako, Tokyo 351-0198 and Nakanishi, K. and Sakemi, Y. and CYRIC, Tohoku University, Sendai and Shimbara, Y. and RIKEN Nishina Center, Wako, Tokyo 351-0198 and Yosoi, M. and Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047 and Zegers, R. G. T. and Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824},
abstractNote = {A high-energy-resolution {sup 9}Be({sup 3}He,t){sup 9}B charge-exchange reaction was performed around a scattering angle of 0 deg. and at an intermediate incident energy of 140 MeV/nucleon for the study of precise Gamow-Teller (GT) transition strengths. The energy resolution of 30 keV allowed a precise deconvolution of the spectrum and the determination of angular distributions of cross sections, excitation energies, and decay widths. The GT strength of 10 states has been determined for the first time using the GT strength of the analogous {beta} decays of {sup 9}Li and {sup 9}C as standards. The large difference between the GT strengths going to the low-lying T=1/2 and the highly excited T=3/2 states is interpreted as a result of their different spatial structures. The obtained GT strength distribution is compared to the results of a (p,n) experiment with lower resolution performed in the 1980s. In particular, the width of the 16.8 MeV, J{sup {pi}=}(5/2{sup +}) state has been determined for the first time.},
doi = {10.1103/PHYSREVC.84.014308},
journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 1,
volume = 84,
place = {United States},
year = {2011},
month = {7}
}