Study on ^<24>Mg (e, e\u27 α) Reaction(I. Nuclear Physics)

The angular correlation of ^Mg(e, e \u27α) reaction was measured for a momentum transfer of 0.51fm^ and energy transfers of 15.5-24.5 MeV. Emitted particles were detected with nine △E-E telescopes located out of plane, rotated around the q axis by 90°. As about a half of approved machine time has been carried, we briefly report a current status of analysis

Search for Two Nucleon States by the ^<12>C (γ, pn) ^<10>B Reaction(I. Nuclear Physics)

We performed the ^C(γ, pn) experiment using tagged photons in an energy range from 30 to 120 MeV. Protons and neutrons were detected by a range telescope and NE213 liquid scintillators, respectively. Missing energy spectra of the ^C(γ, pn) reaction were deduced to search for the two nucleon excited states. In this report, we show the experimental setup for the ^C(γ, pn) reaction using the tagged photon beams. The preliminary results are shown and discussed. The data analysis is in progress

Study of neutron Induced Nuclear Reactions at CYRIC

開始ページ、終了ページ: 冊子体のページ付

Isovector E2/E0 strength in ^<28>Si studied by the (e, e\u27n) reaction II(I. Nuclear Physics)

We have measured the ^Si (e, e\u27n) reaction in the excitation energy range 28.5- 39.5 MeV which is higher than that in the previous experiment. The obtained E1 strength agreed with that of the photoreaction. The E2-E0 component below 22 MeV showed a difference to that of the (e, e\u27p_^) reaction and was similar to the (e, e\u27 α_1) and ( α, α \u27) reactions which contain dominantly isoscalar resonances. In the higher energy, the present E2-E0 data have a broad bump from 23 to 35 MeV which is not seen in the (α, α\u27) reaction ; it is thought to be attributed to the isovector excitation. This interpretation is partially supported by the result of the ^Si(^7Li, ^7Be) ^Al experiment