Cross sections and analyzing powers for (p,n) reactions on He3 and He4 at 346 MeV

E. Ihara, Tomotsugu Wakasa, M. Dozono, K. Hatanaka, T. Imamura, M. Kato, S. Kuroita, H. Matsubara, Tetsuo Noro, H. Okamura, K. Sagara, Y. Sakemi, K. Sekiguchi, K. Suda, T. Sueta, Y. Tameshige, A. Tamii, H. Tanabe, Y. Yamada

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Abstract

The cross sections and analyzing powers for (p,n) reactions on He3 and He4 have been measured at a bombarding energy of Tp=346 MeV and reaction angles of 8=9.4-27°. The energy transfer spectra for 3He(p,n) at large 8 (16°) are dominated by quasielastic contributions and can be reasonably reproduced by plane-wave impulse approximation (PWIA) calculations for quasielastic scattering. By contrast, the known L=1 resonances in Li4 are clearly observed near the threshold in the 4He(p,n) spectra. Because these contributions are remarkable at small angles, the energy spectra are significantly different from those expected for quasielastic scattering. The data are compared with the PWIA calculations, and it is found that the quasielastic contributions are dominant at large 8 (22°). The nuclear correlation effects on the quasielastic peak for 4He(p,n) are also discussed.

Original languageEnglish
Article number024607
JournalPhysical Review C - Nuclear Physics
Volume78
Issue number2
DOIs
Publication statusPublished - Aug 28 2008

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impulses
plane waves
cross sections
approximation
scattering
energy spectra
energy transfer
thresholds
energy

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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Cross sections and analyzing powers for (p,n) reactions on He3 and He4 at 346 MeV. / Ihara, E.; Wakasa, Tomotsugu; Dozono, M.; Hatanaka, K.; Imamura, T.; Kato, M.; Kuroita, S.; Matsubara, H.; Noro, Tetsuo; Okamura, H.; Sagara, K.; Sakemi, Y.; Sekiguchi, K.; Suda, K.; Sueta, T.; Tameshige, Y.; Tamii, A.; Tanabe, H.; Yamada, Y.

In: Physical Review C - Nuclear Physics, Vol. 78, No. 2, 024607, 28.08.2008.

Research output: Contribution to journalArticle

Ihara, E, Wakasa, T, Dozono, M, Hatanaka, K, Imamura, T, Kato, M, Kuroita, S, Matsubara, H, Noro, T, Okamura, H, Sagara, K, Sakemi, Y, Sekiguchi, K, Suda, K, Sueta, T, Tameshige, Y, Tamii, A, Tanabe, H & Yamada, Y 2008, 'Cross sections and analyzing powers for (p,n) reactions on He3 and He4 at 346 MeV', Physical Review C - Nuclear Physics, vol. 78, no. 2, 024607. https://doi.org/10.1103/PhysRevC.78.024607
Ihara, E. ; Wakasa, Tomotsugu ; Dozono, M. ; Hatanaka, K. ; Imamura, T. ; Kato, M. ; Kuroita, S. ; Matsubara, H. ; Noro, Tetsuo ; Okamura, H. ; Sagara, K. ; Sakemi, Y. ; Sekiguchi, K. ; Suda, K. ; Sueta, T. ; Tameshige, Y. ; Tamii, A. ; Tanabe, H. ; Yamada, Y. / Cross sections and analyzing powers for (p,n) reactions on He3 and He4 at 346 MeV. In: Physical Review C - Nuclear Physics. 2008 ; Vol. 78, No. 2.
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AU - Ihara, E.

AU - Wakasa, Tomotsugu

AU - Dozono, M.

AU - Hatanaka, K.

AU - Imamura, T.

AU - Kato, M.

AU - Kuroita, S.

AU - Matsubara, H.

AU - Noro, Tetsuo

AU - Okamura, H.

AU - Sagara, K.

AU - Sakemi, Y.

AU - Sekiguchi, K.

AU - Suda, K.

AU - Sueta, T.

AU - Tameshige, Y.

AU - Tamii, A.

AU - Tanabe, H.

AU - Yamada, Y.

PY - 2008/8/28

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N2 - The cross sections and analyzing powers for (p,n) reactions on He3 and He4 have been measured at a bombarding energy of Tp=346 MeV and reaction angles of 8=9.4-27°. The energy transfer spectra for 3He(p,n) at large 8 (16°) are dominated by quasielastic contributions and can be reasonably reproduced by plane-wave impulse approximation (PWIA) calculations for quasielastic scattering. By contrast, the known L=1 resonances in Li4 are clearly observed near the threshold in the 4He(p,n) spectra. Because these contributions are remarkable at small angles, the energy spectra are significantly different from those expected for quasielastic scattering. The data are compared with the PWIA calculations, and it is found that the quasielastic contributions are dominant at large 8 (22°). The nuclear correlation effects on the quasielastic peak for 4He(p,n) are also discussed.

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