核反應(yīng)中的多重內(nèi)部反射方法研究（英文）
發(fā)布時(shí)間：2018-01-14 05:17
本文關(guān)鍵詞：核反應(yīng)中的多重內(nèi)部反射方法研究（英文） 出處：《原子核物理評(píng)論》2017年02期 論文類型：期刊論文
更多相關(guān)文章： α粒子俘獲 隧穿效應(yīng) 多重內(nèi)部反射方法 熔合幾率 透射系數(shù)與反射系數(shù) 角動(dòng)量截?cái)?/b> α衰變
【摘要】：討論了量子多重內(nèi)部反射方法(MIR方法),這是一種研究核反應(yīng)的更準(zhǔn)確的量子力學(xué)方法。對(duì)于一個(gè)原子核俘獲α粒子的過程,MIR方法能夠給出(1)α-核勢(shì)的新參數(shù);(2)新的熔合幾率。基于MIR方法我們給出了這類過程的完整量子力學(xué)描述,考慮熔合幾率后MIR方法能夠顯著地提高實(shí)驗(yàn)與理論的吻合度。具體研究了α+~(40)Ca和α+~(44)Ca兩類反應(yīng),給出了新的核勢(shì)參數(shù)核和熔合幾率。對(duì)于第一個(gè)反應(yīng)理論計(jì)算值與實(shí)驗(yàn)的偏離比其他計(jì)算結(jié)果減少了41.72倍,對(duì)于第二個(gè)反應(yīng)減少了34.06倍。進(jìn)一步,基于本工作熔合幾率公式,給出了兩類反應(yīng)截面不同的原因,這是與中子幻數(shù)N=20附近的原子核基態(tài)的球形構(gòu)型和形變構(gòu)型共存導(dǎo)致的。為了更好地理解幻數(shù)N=26附近原子核的性質(zhì),預(yù)言了α+46Ca的反應(yīng)截面。
[Abstract]:Discuss the quantum multiple internal reflection method (MIR method), the quantum mechanics is the more accurate method of a nuclear reaction. The process for a nuclear capture of alpha particle, the MIR method can provide (1) a new parameter alpha nuclear potential; (2) the new fusion probability MIR method. We give a complete Description Based on the quantum mechanics of this kind of process, considering the fusion probability after MIR method can significantly improve the fit of experimental and theoretical studies. The alpha +~ (40) and Ca (44) Ca two alpha +~ reaction, given the potential parameters of nuclear and nuclear fusion probability for the new. A theoretical calculation and experimental deviation than other calculation results is reduced by a factor of 41.72 to second was reduced by 34.06 times. Further, the fusion probability formula based on the reasons given by two different reaction cross sections, which are spherical and nucleus ground near the neutron magic numbers of N=20 The configuration and configuration. The coexistence of lead to deformation in order to better understand the magic number near N=26 nuclear reaction cross section properties, alpha +46Ca was predicted.
【作者單位】： 中國科學(xué)院近代物理研究所;Institute
【基金】：National Natural Science Foundation of China(11575254)~~
【分類號(hào)】：O571.4
【正文快照】： 1Introduction Our understanding about nuclear interactions is based on experimental information about nuclear reactions.Today,semiclassical methods are very popular in quantum description of these reactions(decays of nuclei with emission of protons,αpa
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