Particle-hole strength excited in the 40Ca(p,n)40Sc reaction at 134 MeV.
Particle-hole strength excited in the 40Ca(p,n)40Sc reaction at 134 MeV.
复制标题
40Ca(p,n)40Sc 反应中激发的粒子孔强度为 134 MeV。
DOI：
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发表时间：
1986
期刊：
影响因子：
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通讯作者：
Foster
中科院分区：
文献类型：
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作者：
Chittrakarn;Anderson;Baldwin;Lebo;Madey;Watson;Foster
The $^{40}mathrm{Ca}$(p,n${)}^{40}$Sc reaction was studied at 134 MeV. Neutron energy spectra were measured by the time-of-flight technique with resolutions of 220 keV at angles from 0ifmmode^circelse extdegreefi{} to 41ifmmode^circelse extdegreefi{} and 415 keV out to 62ifmmode^circelse extdegreefi{}. The ${2}^{mathrm{ensuremath{-}}}$,${3}^{mathrm{ensuremath{-}}}$,${4}^{mathrm{ensuremath{-}}}$,${5}^{mathrm{ensuremath{-}}}$ band of states based on the (${f}_{7/2}$,${d}_{3/2}^{mathrm{ensuremath{-}}1}$) 1p1h structure was observed at low excitation energies, in good agreement with known analog states in $^{40}mathrm{Ca}$ and $^{40}mathrm{K}$. The shapes of the cross-section and analyzing-power angular distributions are in good agreement with distorted-wave impulse-approximation calculations using simple 1p1h (Tamm-Dancoff approximation) shell-model wave functions. A relatively strong transition to a state at ${E}_{x}$=2.3 MeV with L=3 is identified tentatively as a ${4}^{mathrm{ensuremath{-}}}$ state with the predominant 1p1h structure (1${f}_{7/2}$,2${s}_{1/2}^{mathrm{ensuremath{-}}1}$).
The $^{40}mathrm{Ca}$(p,n${)}^{40}$Sc reaction was studied at 134 MeV. Neutron energy spectra were measured by the time-of-flight technique with resolutions of 220 keV at angles from 0ifmmode^circelse extdegreefi{} to 41ifmmode^circelse extdegreefi{} and 415 keV out to 62ifmmode^circelse extdegreefi{}. The ${2}^{mathrm{ensuremath{-}}}$,${3}^{mathrm{ensuremath{-}}}$,${4}^{mathrm{ensuremath{-}}}$,${5}^{mathrm{ensuremath{-}}}$ band of states based on the (${f}_{7/2}$,${d}_{3/2}^{mathrm{ensuremath{-}}1}$) 1p1h structure was observed at low excitation energies, in good agreement with known analog states in $^{40}mathrm{Ca}$ and $^{40}mathrm{K}$. The shapes of the cross-section and analyzing-power angular distributions are in good agreement with distorted-wave impulse-approximation calculations using simple 1p1h (Tamm-Dancoff approximation) shell-model wave functions. A relatively strong transition to a state at ${E}_{x}$=2.3 MeV with L=3 is identified tentatively as a ${4}^{mathrm{ensuremath{-}}}$ state with the predominant 1p1h structure (1${f}_{7/2}$,2${s}_{1/2}^{mathrm{ensuremath{-}}1}$).