Complete set of polarization transfer coefficients for the3He(p,n)reaction at 346 MeV and 0 degrees

Abstract

We report measurements of the cross-section and a complete set of polarization transfer coefficients for the 3 He(p, n) reaction at a bombarding energy T p = 346 MeV and a reaction angle θ lab = 0 • . The data are compared with the corresponding free nucleon-nucleon values on the basis of the predominance of quasi-elastic scattering processes. Significant discrepancies have been observed in the polarization transfer D LL (0 • ), which are presumably the result of the three-proton T = 3/2 resonance. The spin-parity of the resonance is estimated to be 1/2 − , and the distribution is consistent with previous results obtained for the same reaction at T p = 48.8 MeV.

Study of three-neutron bound and continuum states

“…Since the 3n → 3n scattering is not able to perform as a laboratory experiment, in the present paper, I will study one of possible realization of 3n continuum systems, namely the charge exchange reaction: 3 H(n, p)3n. * E-mail:ishikawa@hosei.ac.jp Actually, there have been some experimental works for its mirror reaction, 3 He(p, n)3p [15,16]. In Ref.…”

Possibility of Measurement of Cross Section and Vector Analyzing Powers of $p-^{3}$He Scattering at the Bronowice Cyclotron Center

“…One expects a progress in this field, which would result in predictions for observables at medium energies. Experimental basis, which could be used for testing these forthcoming theoretical findings, is nowadays very poor, especially for spin observables at medium energies [18][19][20][21][22][23][24][25][26][27]. Therefore, the idea of the construction of a polarized 3 He target at the new CCB facility has come up.…”