Low energy range dielectronic recombination of Fluorine-like Fe17+ at the CSRm

被引：12

作者：

Khan, Nadir ^{[1
,2
]}

Huang, Zhong-Kui ^{[1
]}

Wen, Wei-Qiang ^{[1
]}

Mahmood, Sultan ^{[1
]}

Dou, Li-Jun ^{[1
,2
]}

Wang, Shu-Xing ^{[3
]}

Xu, Xin ^{[3
]}

Wang, Han-Bing ^{[1
]}

Chen, Chong-Yang ^{[4
]}

Chuai, Xiao-Ya ^{[1
,2
]}

Zhu, Xiao-Long ^{[1
]}

Zhao, Dong-Mei ^{[1
]}

Mao, Li-Jun ^{[1
]}

Li, Jie ^{[1
]}

Yin, Da-Yu ^{[1
]}

Yang, Jian-Cheng ^{[1
]}

Yuan, You-Jin ^{[1
]}

Zhu, Lin-Fan ^{[3
]}

Ma, Xin-Wen ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Univ Sci & Technol China, Dept Modern Phys, Hefei Natl Lab Phys Sci Micro Scale, Hefei 230026, Anhui, Peoples R China

[4] Fudan Univ, Dept Nucl Sci & Technol, Inst Modern Phys, Shanghai EBIT Lab,Key Lab Nucl Phys & Ion Beam Ap, Shanghai 200433, Peoples R China

来源：

CHINESE PHYSICS C | 2018年 / 42卷 / 06期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

storage ring; electron cooler; electron-ion recombination; plasma rate coefficient; COLLISIONAL IONIZATION EQUILIBRIUM; OPTICALLY THIN PLASMAS; RATE COEFFICIENTS; LABORATORY MEASUREMENTS; PHOTOIONIZED GAS; XVIII; SOLAR;

D O I：

10.1088/1674-1137/42/6/064001

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The accuracy of dielectronic recombination (DR) data for astrophysics related ions plays a key role in astrophysical plasma modeling. The absolute DR rate coefficient of Fe17+ ions was measured at the main cooler storage ring at the Institute of Modern Physics, Lanzhou, China. The experimental electron-ion collision energy range covers the first Rydberg series up to n= 24 for the DR resonances associated with the P-2(1/2) -> P-2(3/2)Delta n = 0 core excitations. A theoretical calculation was performed by using FAC code and compared with the measured DR rate coefficient. Overall reasonable agreement was found between the experimental results and calculations. Moreover, the plasma rate coefficient was deduced from the experimental DR rate coefficient and compared with the available results from the literature. At the low energy range, significant discrepancies were found, and the measured resonances challenge state-of-the-art theory at low collision energies.

引用

页数：6

共 42 条

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