Measurement of spinflip probability and spin giant resonance

本研究的初始意图有两个：1）通过（d， d'γ）反应搜索等尺度自旋巨人共振; 2）通过（d， d'γ）反应（2）通过（y D13 y D1 He-N效应相互作用的研究。自从这一提议已经批准了2年的期限，而且规模很大。预算削减了一半，我们调整了我们的计划，并决定采取第二个主题，这被称为对D126 L1 Mg的旋转测量（イイD13イエD1He，tγ）イD126イエD1Al[1イイD1+イエD1 ; 1.06 MeV：反应发生在178 MeV：实验两次（1998年12月和1999年11月），荷兰格罗宁根大学KVI使用AGOR Cyclotron和BBS分光计系统。以下数据获得：1。The elastic scucing for theイイD126イエD1Mg（イイD13イエD1He，イD13イエD1He）イイD126イエD1Mg at 178 MeV has been measured atイD2labイエD2 = 9° - 42° to extract the optical potential parameters， which is needed for the later DWBA analysis.2.《Gamow-T的不同交叉节》 ... More eller transition to the 1イイD1+イイD1 state at 1. 06 MeV inイD126イイD1Al have been measured for theイD1Mg（イイD13イエD1He， t ）イD126イエD1Al reaction at 178 MeV atイイD2labイD2 = 0° - 30°。获得的角度分布将用于以后的DWBA分析。Coincidence measurement has been performed for theイイD126イイD1Mg（イイD13イD1He， t）イD126イD1Al[1イD1+イエD1 ; 1. 06 MeV] reaction at 178 MeV。用于D2c.m. D2 = 0.3° - 3.8°as 0.55 - 0.65.4。DWBA分析是通过使用光学潜力、D13和D1 He-N有效交互和Brown-Wildenthal shell模型波函数进行的。It turns out that the calculation underpredicts largely the measured spinflip probabilities。此fact clearly indicates the deficiency of theイイD13エD1He-N effective interactions.This project has been？ed very smoothly with fruit？results。最后，这是对中间能量（D13）反应的第一个旋转滑动测量，这是它熊非常珍贵的信息标记3他旋转交互。Less（低）

The initial intention of this research was two fold 1) search for the isoscalar spin giant reso-nance through the (d, d'γ) reaction and 2) study of ィイD13ィエD1He-N effective interactions through (ィイD13ィエD1He,tγ) reaction. Since this proposal has been approve as the 2-year term and with large. budget cut to half, we adjusted our plan and we decided to pursue the second subject, namely the spinflip measurement of the ィイD126ィエD1Mg(ィイD13ィエD1He,tγ) ィイD126ィエD1Al[1ィイD1+ィエD1 ; 1.06 MeV] reaction at 178 MeV.The experiments were performed two times (December, 1998 and November 1999) at KVI, Groningen University, The Netherlands by using the AGOR cyclotron and BBS spectrometer system.The following data have been obtained :1. The elastic scattering for the ィイD126ィエD1Mg(ィイD13ィエD1He, ィイD13ィエD1He) ィイD126ィエD1Mg at 178 MeV has been measured at θィイD2labィエD2 = 9° - 42° to extract the optical potential parameters, which is needed for the later DWBA analysis.2. The differential cross sections for the Gamow-T … More eller transition to the 1ィイD1+ィエD1 state at 1.06 MeV in ィイD126ィエD1Al have been measured for the ィイD126ィエD1Mg(ィイD13ィエD1He, t ) ィイD126ィエD1Al reaction at 178 MeV atθィイD2labィエD2 = 0° - 30°. Obtained angular distribution will be used for the later DWBA analysis.3. Coincidence measurement has been performed for the ィイD126ィエD1Mg(ィイD13ィエD1He, tγ)ィイD126ィエD1Al[1ィイD1+ィエD1 ; 1.06 MeV] reaction at 178 MeV. The spinflip probability has deduced for θィイD2c.m.ィエD2 = 0.3° - 3.8°as 0.55 - 0.65.4. The DWBA analyses are carried out by using the optical potential, ィイD13ィエD1He-N effective interac-tions and Brown-Wildenthal shell model wave functions. It turns out that the calculation underpredicts largely the measured spinflip probabilities. This fact clearly indicates the deficiency of the ィイD13ィエD1He-N effective interactions.This project has been completed very smoothly with fruitful results. Finally this is the first spinflip measurement for the (ィイD13ィエD1He, t ) reaction at intermediate energies and thus it bears very precious information regarding 3He spin-interactions. Less