Spin Excitations in Nuclei

研究了在450mev下（^3He, t）反应后测量质子和中子衰变的技术问题。数据采集系统得到了很大的改进。在“大雷电”光谱仪的焦平面探测系统上，采用多硅-中子探测器对中子和质子的符合衰变进行了研究。本会计年度主要研究的课题如下：1。通过电荷交换反应的核自旋巨共振。粒子从镜面^<12>N和^<12>B核衰变。太阳中微子与^<176>Yb（^3He, t）反应。质子-质子碰撞中的伽马射线产生机制。^<71>Ga6的中微子吸收截面。通过（^3He, t）和（t, ^3He）反应的镜像系统核的核结构中微子和核自旋响应。作为下一个课题，我们在KVI和RCNP准备了一些新的实验。在理解质子和中子从原子核自旋激发衰变的复杂理论计算已经开始。

We studied the techinical problems to measure proton and neutrom decays followtng the (^3He, t) reactions at 450 MeV.The data taking system was greatly inproved. The coincidence technique using multe silicon- and neutron- detectors has been developed for the neutron and proton decays in coincidence with the focal plane detector system of the spectrometer "Grand Raiden". The following subjects were studied in this fiscal year ;1.Nuclear spin giant resonances via charge exchange reactions.2.Particle decays from the mirror ^<12>N and ^<12>B nuclei.3.Solar neutrinos and ^<176>Yb(^3He, t) reaction.4.gamma-ray production mechanism in proton-proton collision.5.Neutrino absorption cross section of ^<71>Ga6.Nuclear Structure of mirror sysmetry nuclei via the (^3He, t) and (t, ^3He) reactions.7.Neutrinos and Nuclear spin responses.As the next subject, we prepare some new experiments at KVI and RCNP.Sophisticated theoretical calculations in understanding the proton and neutron decays from the spin excitations in nuclei have started.