### Abstract

The quasi-elastic scattering (QES) process has been studied for the (p, n) reaction at 300 and 400 MeV. Energy spectra for targets ranging from ^{2}H to ^{nat}Pb have been obtained for a wide range of scattering angles corresponding to momentum transfers q = 1.0 - 2.4 fm^{-1}. Energy shift of the QES peak from that of ^{2}H to higher excitation energy is observed for all targets studied, with a gradual increase with target mass reaching almost a constant value of ∼26 MeV beyond ^{12}C. The mass dependence oo the effective neutron number (N_{eff}) for the (p, n) QFS process is well represented by N_{eff} = 0.85N^{0.5} over a wide mass range from ^{2}H to ^{nat}Pb except for ^{6}Li, ^{7}Li and ^{9}Be which deviate significantly. The analyzing powers of the QES peak region for the ^{12}C and ^{40}Ca targets are compared to those of the ^{2}H(p, n) reaction at 300 and 400 MeV and found to be almost identical for q ≤ 1.5 fm^{-1}. Transverse polarization transfer coefficients at 0 degree D_{NN}(0°) have been measured for the 1p shell nuclei at 300 MeV. Large negative D_{NN}(0°) values are observed for the continuum region up to an excitation energy of 50 MeV irrespective of targets. The D_{NN}(0°) values observed for the GT transitions are around -0.28 which indicates the contribution from the tensor interactions. The DWIA calculations well reproduce the observed D_{NN}(0°) values.

Original language | English |
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Pages (from-to) | 111-122 |

Number of pages | 12 |

Journal | Nuclear Physics, Section A |

Volume | 577 |

Issue number | 1-2 |

DOIs | |

Publication status | Published - Sep 19 1994 |

Externally published | Yes |

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### All Science Journal Classification (ASJC) codes

- Nuclear and High Energy Physics

### Cite this

_{NN}(0°) with (p, n) reactions.

*Nuclear Physics, Section A*,

*577*(1-2), 111-122. https://doi.org/10.1016/0375-9474(94)90843-5

**Measurements of quasi-elastic scattering and D _{NN}(0°) with (p, n) reactions.** / Sakai, H.; Greenfield, M. B.; Hatanaka, K.; Ishida, S.; Koori, N.; Okamura, H.; Okihana, A.; Otsu, H.; Sakamoto, N.; Satou, Y.; Uesaka, T.; Wakasa, Tomotsugu.

Research output: Contribution to journal › Article

_{NN}(0°) with (p, n) reactions',

*Nuclear Physics, Section A*, vol. 577, no. 1-2, pp. 111-122. https://doi.org/10.1016/0375-9474(94)90843-5

_{NN}(0°) with (p, n) reactions. Nuclear Physics, Section A. 1994 Sep 19;577(1-2):111-122. https://doi.org/10.1016/0375-9474(94)90843-5

}

TY - JOUR

T1 - Measurements of quasi-elastic scattering and DNN(0°) with (p, n) reactions

AU - Sakai, H.

AU - Greenfield, M. B.

AU - Hatanaka, K.

AU - Ishida, S.

AU - Koori, N.

AU - Okamura, H.

AU - Okihana, A.

AU - Otsu, H.

AU - Sakamoto, N.

AU - Satou, Y.

AU - Uesaka, T.

AU - Wakasa, Tomotsugu

PY - 1994/9/19

Y1 - 1994/9/19

N2 - The quasi-elastic scattering (QES) process has been studied for the (p, n) reaction at 300 and 400 MeV. Energy spectra for targets ranging from 2H to natPb have been obtained for a wide range of scattering angles corresponding to momentum transfers q = 1.0 - 2.4 fm-1. Energy shift of the QES peak from that of 2H to higher excitation energy is observed for all targets studied, with a gradual increase with target mass reaching almost a constant value of ∼26 MeV beyond 12C. The mass dependence oo the effective neutron number (Neff) for the (p, n) QFS process is well represented by Neff = 0.85N0.5 over a wide mass range from 2H to natPb except for 6Li, 7Li and 9Be which deviate significantly. The analyzing powers of the QES peak region for the 12C and 40Ca targets are compared to those of the 2H(p, n) reaction at 300 and 400 MeV and found to be almost identical for q ≤ 1.5 fm-1. Transverse polarization transfer coefficients at 0 degree DNN(0°) have been measured for the 1p shell nuclei at 300 MeV. Large negative DNN(0°) values are observed for the continuum region up to an excitation energy of 50 MeV irrespective of targets. The DNN(0°) values observed for the GT transitions are around -0.28 which indicates the contribution from the tensor interactions. The DWIA calculations well reproduce the observed DNN(0°) values.

AB - The quasi-elastic scattering (QES) process has been studied for the (p, n) reaction at 300 and 400 MeV. Energy spectra for targets ranging from 2H to natPb have been obtained for a wide range of scattering angles corresponding to momentum transfers q = 1.0 - 2.4 fm-1. Energy shift of the QES peak from that of 2H to higher excitation energy is observed for all targets studied, with a gradual increase with target mass reaching almost a constant value of ∼26 MeV beyond 12C. The mass dependence oo the effective neutron number (Neff) for the (p, n) QFS process is well represented by Neff = 0.85N0.5 over a wide mass range from 2H to natPb except for 6Li, 7Li and 9Be which deviate significantly. The analyzing powers of the QES peak region for the 12C and 40Ca targets are compared to those of the 2H(p, n) reaction at 300 and 400 MeV and found to be almost identical for q ≤ 1.5 fm-1. Transverse polarization transfer coefficients at 0 degree DNN(0°) have been measured for the 1p shell nuclei at 300 MeV. Large negative DNN(0°) values are observed for the continuum region up to an excitation energy of 50 MeV irrespective of targets. The DNN(0°) values observed for the GT transitions are around -0.28 which indicates the contribution from the tensor interactions. The DWIA calculations well reproduce the observed DNN(0°) values.

UR - http://www.scopus.com/inward/record.url?scp=4243547238&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=4243547238&partnerID=8YFLogxK

U2 - 10.1016/0375-9474(94)90843-5

DO - 10.1016/0375-9474(94)90843-5

M3 - Article

AN - SCOPUS:4243547238

VL - 577

SP - 111

EP - 122

JO - Nuclear Physics A

JF - Nuclear Physics A

SN - 0375-9474

IS - 1-2

ER -