Complete Set of Polarization Transfer Observables for the ${}^{12}\mathrm{C}(p,n)$ Reaction at 296 MeV and 0${}^{\circ }$

Abstract

A complete set of polarization transfer observables has been measured for the ${}^{12}\mathrm{C}(p,n)$ reaction at $T_p=296\mathrm{MeV}$ and ${\theta }_{\mathrm{lab}}=0^{\circ }$. The total spin transfer $\Sigma (0^{\circ })$ and the observable $f_1$ deduced from the measured polarization transfer observables indicate that the spin--dipole resonance at $E_x\simeq 7\mathrm{MeV}$ has greater $2^{-}$ strength than $1^{-}$ strength, which is consistent with recent experimental and theoretical studies. The results also indicate a predominance of the spin-flip and unnatural-parity transition strength in the continuum. The exchange tensor interaction at a large momentum transfer of $Q\simeq 3.6{\mathrm{fm}}^{-1}$ is discussed.

arXiv comment4 pages, 4 figures

References in corpus (2)

• 12C(p,n)12N reaction at 135 MeV
• Performance of the neutron polarimeter NPOL3 for high resolution measurements

Cited by in corpus (6)

• Complete set of polarization transfer observables for the ${}^{16}\mathrm{O}(\vec{p},\vec{n}){}^{16}\mathrm{F}$ reaction at 296 MeV and 0 degrees
• Complete set of polarization transfer coefficients for the ${}^3\mathrm{He}(p,n)$ reaction at 346 MeV and 0 degrees
• Charge-exchange dipole excitations in deformed nuclei
• Polarization transfer measurements for ${}^{12}\mathrm{C}(\vec{p},\vec{n}{)}^{12}\mathrm{N}(g.s.,1^{+})$ at 296 MeV and nuclear correlation effects
• Measurement of $\gamma$ rays from the giant resonances excited by ${}^{12}$C$(p,p^{\prime })$ reaction at 392 MeV and 0${}^{\circ }$
• Parity-transfer $({}^{16}\mathrm{O},{}^{16}\mathrm{F}(0^{-},g.s.))$ reaction as a selective probe of isovector $0^{-}$ states in nuclei