TY - JOUR

T1 - Importance of the sequential two-step transfer process in A ΔS = 1 and ΔT = 1 inelastic transition of the 14N(p, p') 14N reaction

AU - Aoki, Y.

AU - Kunori, S.

AU - Nagano, K.

AU - Toba, Y.

AU - yagi, K.

N1 - Funding Information:
We are greatly indebted to Dr . Igarashi who provided us with programs TENSOR and TWOFNR and a detailed explanation of the knock-on exchange process. It is our pleasure to thank Professor Raynal who gave us permission to use his program DWBA70. We wish to thank Drs. Kubo and Mori for their helpful discussions . This work is supported in part by Nuclear and Solid State Research Project, University of Tsukuba.

PY - 1982/7/5

Y1 - 1982/7/5

N2 - Differential cross sections and vector analyzing powers for 14N(p, p′) and 14N(p′, d) reactions have been measured at Ep = 21.0 MeV to elucidate the reaction mechanism and the effective interaction for the ΔS = ΔT = 1 transition in the 14N(p, p′)14N(2.31 MeV) reaction. The data are analyzed in terms of the finite-range distorted-wave Born approximation (DWBA) which includes direct, knock-on exchange and (p, d) (d, p′) two-step processes. Shell-model wave functions of Cohen and Kurath are used. The data for the first excited state are reasonably well explained by including a two-step process in the calculations. The two-step process explains half of the experimental intensity. Moreover the vector analyzing power cannot be explained without introducing this two-step process. The vector analyzing power of protons leading to the second excited state in 14N is better explained by introducing a macroscopic calculation. The data for the 14N(p, d) 13N (g.s.) reaction are well described by a DWBA calculation using a modified deuteron optical potential. The knock-on exchange contribution is relatively small. The importance of this two-step process for ΔS = ΔT = 1 transitions up to 40 MeV is discussed.

AB - Differential cross sections and vector analyzing powers for 14N(p, p′) and 14N(p′, d) reactions have been measured at Ep = 21.0 MeV to elucidate the reaction mechanism and the effective interaction for the ΔS = ΔT = 1 transition in the 14N(p, p′)14N(2.31 MeV) reaction. The data are analyzed in terms of the finite-range distorted-wave Born approximation (DWBA) which includes direct, knock-on exchange and (p, d) (d, p′) two-step processes. Shell-model wave functions of Cohen and Kurath are used. The data for the first excited state are reasonably well explained by including a two-step process in the calculations. The two-step process explains half of the experimental intensity. Moreover the vector analyzing power cannot be explained without introducing this two-step process. The vector analyzing power of protons leading to the second excited state in 14N is better explained by introducing a macroscopic calculation. The data for the 14N(p, d) 13N (g.s.) reaction are well described by a DWBA calculation using a modified deuteron optical potential. The knock-on exchange contribution is relatively small. The importance of this two-step process for ΔS = ΔT = 1 transitions up to 40 MeV is discussed.

KW - Nuclear reactions

UR - http://www.scopus.com/inward/record.url?scp=34547475499&partnerID=8YFLogxK

U2 - 10.1016/0375-9474(82)90136-1

DO - 10.1016/0375-9474(82)90136-1

M3 - Article

AN - SCOPUS:34547475499

SN - 0375-9474

VL - 382

SP - 269

EP - 286

JO - Nuclear Physics, Section A

JF - Nuclear Physics, Section A

IS - 2

ER -