<sup>190，192</sup>Pb原子核的超形变带的带外衰变（英文）

顾建中; 彭帮保; 李振宇; 于国梁

doi:10.11804/NuclPhysRev.34.01.057

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^190，192Pb原子核的超形变带的带外衰变（英文）

顾建中, 彭帮保, 李振宇, 于国梁

文章导航 > 原子核物理评论 > 2017 > 34(1): 57-61

顾建中, 彭帮保, 李振宇, 于国梁. 190，192Pb原子核的超形变带的带外衰变（英文）[J]. 原子核物理评论, 2017, 34(1): 57-61. doi: 10.11804/NuclPhysRev.34.01.057

引用本文:

顾建中, 彭帮保, 李振宇, 于国梁. ^190，192Pb原子核的超形变带的带外衰变（英文）[J]. 原子核物理评论, 2017, 34(1): 57-61. doi: 10.11804/NuclPhysRev.34.01.057

GU Jianzhong, PENG Bangbao, LI Zhenyu, YU Guoliang. Decay Out of Superdeformed Bands in 190,192Pb[J]. Nuclear Physics Review, 2017, 34(1): 57-61. doi: 10.11804/NuclPhysRev.34.01.057

Citation:

GU Jianzhong, PENG Bangbao, LI Zhenyu, YU Guoliang. Decay Out of Superdeformed Bands in ^190,192Pb[J]. Nuclear Physics Review, 2017, 34(1): 57-61. doi: 10.11804/NuclPhysRev.34.01.057

^190，192Pb原子核的超形变带的带外衰变（英文）

doi: 10.11804/NuclPhysRev.34.01.057

1.
中国原子能科学研究院, 北京 102413;
2.
哈尔滨工程大学核安全与仿真技术国家实验室, 哈尔滨 150001;
3.
贵州师范学院物理与电子学院, 贵阳 550018;
4.
华北电力大学数理系, 河北保定 071003

基金项目: 国家自然科学基金资助项目（11275271）；国家自然科学基金创新研究群体项目（11321064）

详细信息

中图分类号: O571.6

Decay Out of Superdeformed Bands in ^190,192Pb

1.
China Institute of Atomic Energy, Beijing 102413, China;
2.
Key Discipline Laboratory of Nuclear Safety and Simulation Technology, Harbin Engineering University, Harbin 150001, China;
3.
School of Physics and Electronic Science, Guizhou Normal College, Guiyang 550018, China;
4.
Department of Mathematics and Physics, North China Electric Power University, Baoding 071003, Hebei, China

Funds: National Natural Science Foundation of China(11275271); Foundation for Innovative Research Groups of the National Natural Science Foundation of China(11321064)

摘要: 将基于组合方法的角动量投影的位能曲面群用于研究铅同位素原子核^190，192Pb 的超形变转动带。位能曲面群计算中采用了Gogny D1S 以及Skyrme SkP SLy4 三种相互作用。如用Gogny D1S 相互作用，¹⁹⁰Pb 原子核没有明显的超形变转动带，而¹⁹²Pb 原子核有非常显著的超形变转动带。用W. K. B. 方法计算了¹⁹²Pb 原子核的超形变带穿透宽度。该穿透宽度很大与用GW模型（Nucl. Phys. A 660 （1999）197）分析实验数据给出的结果相近。在Gogny D1S 相互作用情形下，就角动量投影对位能曲面群的影响作了讨论，发现角动量投影压低了分隔超形变转动带与正常形变转动带之间的位垒。还用Skyrme SkP 和SLy4 相互作用计算了角动量投影的位能曲面群，发现位垒明显高于Gogny D1S 相互作用给出的位垒。在Skyrme 相互作用情形下，¹⁹²Pb 原子核的超形变带穿透宽度明显小于Gogny 相互作用给出的宽度，但是较SB方法（Phys. Rev. C，60 （1999） 051305）分析实验数据得到的结果高出几个数量级。于是，对SB 方法提出了质疑，因为它给出了极其微小的传播宽度。

The combined method is applied to calculate the angular momentum projected potential energy surfaces (AMPPES) of ^190,192Pb. The Supper-deformed(SD) rotational bands of the two nuclei are studied with the AMPPES computed with the Gogny D1S and Skyrme SkP and SLy4 interactions. It is found that there is no pronounced SD band in ¹⁹⁰Pb in the case of the Gogny interaction, which is consistent with the experimental observation. A well developed SD band with the Gogny interaction is found in ¹⁹²Pb. The tunneling width of ¹⁹²Pb is comparable to that given by the GW approach (Nucl. Phys. A 660 (1999)197) and orders of magnitude larger than that given by the SB approach (Phys. Rev. C 60 (1999) 051305). The influence of the angular momentum projection on the potential energy surfaces is examined in the case of the Gogny interaction for ^190,192Pb. It is shown that the angular momentum projection suppresses the barrier separating the SD and ND rotational bands. Higher barriers of the AMPPESs for the two nuclei computed with the Skyrme SkP and SLy4 interactions are obtained compared with those given by the Gogny force. The tunneling width of ¹⁹²Pb is also big for the Skyrme interactions. We put the SB approach into question which gives only an extremely small spreading width.
- 组合方法 /
- 带外衰变 /
- 角动量投影的位能面群
Abstract: The combined method is applied to calculate the angular momentum projected potential energy surfaces (AMPPES) of ^190,192Pb. The Supper-deformed(SD) rotational bands of the two nuclei are studied with the AMPPES computed with the Gogny D1S and Skyrme SkP and SLy4 interactions. It is found that there is no pronounced SD band in ¹⁹⁰Pb in the case of the Gogny interaction, which is consistent with the experimental observation. A well developed SD band with the Gogny interaction is found in ¹⁹²Pb. The tunneling width of ¹⁹²Pb is comparable to that given by the GW approach (Nucl. Phys. A 660 (1999)197) and orders of magnitude larger than that given by the SB approach (Phys. Rev. C 60 (1999) 051305). The influence of the angular momentum projection on the potential energy surfaces is examined in the case of the Gogny interaction for ^190,192Pb. It is shown that the angular momentum projection suppresses the barrier separating the SD and ND rotational bands. Higher barriers of the AMPPESs for the two nuclei computed with the Skyrme SkP and SLy4 interactions are obtained compared with those given by the Gogny force. The tunneling width of ¹⁹²Pb is also big for the Skyrme interactions. We put the SB approach into question which gives only an extremely small spreading width.
- Combined method /
- decay out of superdeformed bands /
- angular momentum projected potential energy surfaces

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^190，192Pb原子核的超形变带的带外衰变（英文）

doi: 10.11804/NuclPhysRev.34.01.057

1. 中国原子能科学研究院, 北京 102413;

2. 哈尔滨工程大学核安全与仿真技术国家实验室, 哈尔滨 150001;

3. 贵州师范学院物理与电子学院, 贵阳 550018;

4. 华北电力大学数理系, 河北保定 071003

基金项目: 国家自然科学基金资助项目（11275271）；国家自然科学基金创新研究群体项目（11321064）

收稿日期: 2016-09-01
刊出日期: 2017-03-20

中图分类号: O571.6

关键词:

组合方法 /

带外衰变 /

角动量投影的位能面群

摘要: 将基于组合方法的角动量投影的位能曲面群用于研究铅同位素原子核^190，192Pb 的超形变转动带。位能曲面群计算中采用了Gogny D1S 以及Skyrme SkP SLy4 三种相互作用。如用Gogny D1S 相互作用，¹⁹⁰Pb 原子核没有明显的超形变转动带，而¹⁹²Pb 原子核有非常显著的超形变转动带。用W. K. B. 方法计算了¹⁹²Pb 原子核的超形变带穿透宽度。该穿透宽度很大与用GW模型（Nucl. Phys. A 660 （1999）197）分析实验数据给出的结果相近。在Gogny D1S 相互作用情形下，就角动量投影对位能曲面群的影响作了讨论，发现角动量投影压低了分隔超形变转动带与正常形变转动带之间的位垒。还用Skyrme SkP 和SLy4 相互作用计算了角动量投影的位能曲面群，发现位垒明显高于Gogny D1S 相互作用给出的位垒。在Skyrme 相互作用情形下，¹⁹²Pb 原子核的超形变带穿透宽度明显小于Gogny 相互作用给出的宽度，但是较SB方法（Phys. Rev. C，60 （1999） 051305）分析实验数据得到的结果高出几个数量级。于是，对SB 方法提出了质疑，因为它给出了极其微小的传播宽度。

The combined method is applied to calculate the angular momentum projected potential energy surfaces (AMPPES) of ^190,192Pb. The Supper-deformed(SD) rotational bands of the two nuclei are studied with the AMPPES computed with the Gogny D1S and Skyrme SkP and SLy4 interactions. It is found that there is no pronounced SD band in ¹⁹⁰Pb in the case of the Gogny interaction, which is consistent with the experimental observation. A well developed SD band with the Gogny interaction is found in ¹⁹²Pb. The tunneling width of ¹⁹²Pb is comparable to that given by the GW approach (Nucl. Phys. A 660 (1999)197) and orders of magnitude larger than that given by the SB approach (Phys. Rev. C 60 (1999) 051305). The influence of the angular momentum projection on the potential energy surfaces is examined in the case of the Gogny interaction for ^190,192Pb. It is shown that the angular momentum projection suppresses the barrier separating the SD and ND rotational bands. Higher barriers of the AMPPESs for the two nuclei computed with the Skyrme SkP and SLy4 interactions are obtained compared with those given by the Gogny force. The tunneling width of ¹⁹²Pb is also big for the Skyrme interactions. We put the SB approach into question which gives only an extremely small spreading width.

English Abstract

Decay Out of Superdeformed Bands in ^190,192Pb

1. China Institute of Atomic Energy, Beijing 102413, China;

2. Key Discipline Laboratory of Nuclear Safety and Simulation Technology, Harbin Engineering University, Harbin 150001, China;

3. School of Physics and Electronic Science, Guizhou Normal College, Guiyang 550018, China;

4. Department of Mathematics and Physics, North China Electric Power University, Baoding 071003, Hebei, China

Funds: National Natural Science Foundation of China(11275271); Foundation for Innovative Research Groups of the National Natural Science Foundation of China(11321064)

Received Date: 2016-09-01
Publish Date: 2017-03-20

Keywords:

Combined method /
decay out of superdeformed bands /
angular momentum projected potential energy surfaces

Abstract: The combined method is applied to calculate the angular momentum projected potential energy surfaces (AMPPES) of ^190,192Pb. The Supper-deformed(SD) rotational bands of the two nuclei are studied with the AMPPES computed with the Gogny D1S and Skyrme SkP and SLy4 interactions. It is found that there is no pronounced SD band in ¹⁹⁰Pb in the case of the Gogny interaction, which is consistent with the experimental observation. A well developed SD band with the Gogny interaction is found in ¹⁹²Pb. The tunneling width of ¹⁹²Pb is comparable to that given by the GW approach (Nucl. Phys. A 660 (1999)197) and orders of magnitude larger than that given by the SB approach (Phys. Rev. C 60 (1999) 051305). The influence of the angular momentum projection on the potential energy surfaces is examined in the case of the Gogny interaction for ^190,192Pb. It is shown that the angular momentum projection suppresses the barrier separating the SD and ND rotational bands. Higher barriers of the AMPPESs for the two nuclei computed with the Skyrme SkP and SLy4 interactions are obtained compared with those given by the Gogny force. The tunneling width of ¹⁹²Pb is also big for the Skyrme interactions. We put the SB approach into question which gives only an extremely small spreading width.

顾建中, 彭帮保, 李振宇, 于国梁. 190，192Pb原子核的超形变带的带外衰变（英文）[J]. 原子核物理评论, 2017, 34(1): 57-61. doi: 10.11804/NuclPhysRev.34.01.057

引用本文:

顾建中, 彭帮保, 李振宇, 于国梁. ^190，192Pb原子核的超形变带的带外衰变（英文）[J]. 原子核物理评论, 2017, 34(1): 57-61. doi: 10.11804/NuclPhysRev.34.01.057

GU Jianzhong, PENG Bangbao, LI Zhenyu, YU Guoliang. Decay Out of Superdeformed Bands in 190,192Pb[J]. Nuclear Physics Review, 2017, 34(1): 57-61. doi: 10.11804/NuclPhysRev.34.01.057

Citation:

GU Jianzhong, PENG Bangbao, LI Zhenyu, YU Guoliang. Decay Out of Superdeformed Bands in ^190,192Pb[J]. Nuclear Physics Review, 2017, 34(1): 57-61. doi: 10.11804/NuclPhysRev.34.01.057