Effect of source size and emission time on the p-p momentum correlation function in the two-proton emission process
文献类型：期刊论文
| 作者 | Zhou, L; Fang, DQ |
| 刊名 | NUCLEAR SCIENCE AND TECHNIQUES
 |
| 出版日期 | 2020 |
| 卷号 | 31期号:5页码:- |
| 关键词 | PROTON NUCLEI |
| ISSN号 | 1001-8042 |
| DOI | 10.1007/s41365-020-00759-w |
| 文献子类 | 期刊论文 |
| 英文摘要 | The effect of source size and emission time on the proton-proton (p-p) momentum correlation function (Cpp(q) has been studied systematically. Assuming a spherical Gaussian source with space and time profile according to the function the correlation function calculation code (CRAB), the results indicate that one C-pp(q) distribution corresponds to a unique combination of source size r(0) and emission time tau. Considering the possible nuclear deformation from a spherical nucleus, an ellipsoidal Gaussian source characterized by the deformation parameter epsilon = Delta R/R has been simulated. There is almost no difference of C-pp(q) between the results of spherically and ellipsoidally shaped sources with small deformation. These results indicate that a unique source size r(0) and emission time could be extracted from the p-p momentum correlation function, which is especially important for identifying the mechanism of two-proton emission from proton-rich nuclei. Furthermore, considering the possible existence of cluster structures within a nucleus, the double Gaussian source is assumed. The results show that the p-p momentum correlation function for a source with or without cluster structures has large systematical differences with the variance of r(0) and tau. This may provide a possible method for experimentally observing the cluster structures in proton-rich nuclei. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/32826]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China 3.Fudan Univ, Inst Modern Phys, Key Lab Nucl Phys & Ion Beam Applicat MOE, Shanghai 200433, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, L,Fang, DQ. Effect of source size and emission time on the p-p momentum correlation function in the two-proton emission process[J]. NUCLEAR SCIENCE AND TECHNIQUES,2020,31(5):-. |
| APA | Zhou, L,&Fang, DQ.(2020).Effect of source size and emission time on the p-p momentum correlation function in the two-proton emission process.NUCLEAR SCIENCE AND TECHNIQUES,31(5),-. |
| MLA | Zhou, L,et al."Effect of source size and emission time on the p-p momentum correlation function in the two-proton emission process".NUCLEAR SCIENCE AND TECHNIQUES 31.5(2020):-. |
入库方式： OAI收割
来源：上海应用物理研究所
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