Atomic Density Distributions of Grain Boundaries in Metals and Lifetime Spectra Characteristics of Positron Annihilation

Chen Jiqiang; Long Qiwei; Zhou Jin; Wang Kelin

Chinese Physics C> 1989, Vol. 13> Issue(S4) : 347-356

Atomic Density Distributions of Grain Boundaries in Metals and Lifetime Spectra Characteristics of Positron Annihilation

Chen Jiqiang ^1,3 ,
Long Qiwei ^2,3,1 ,
Zhou Jin ¹ ,
Wang Kelin ¹

1. Centre for Fundamental Physics, University of Science and Technology of China, Hefei;
2. Institute of Metal Research, Chinese Academy of Sciences, Shenyang;
3. International Centre for Material Physics, Chinese Academy of Sciences, Shenyang

Abstract
HTML
Reference
Related

PDF

Abstract：
On the basis of a simple grain boundary model, the trapped states of positrons at grain boundaries in pure Aluminum are solved and the corresponding lifetime spectra of positron annihilation calculated. The correlations between the atomic density distributions of grain boundaries and the lifetime spectra are discussed, and the existent experimental results are explained theoretically.

[1]	Renli Xu , Chen Wu , Jian Liu , Bin Hong , Jie Peng , Xiong Li , Ruxian Zhu , Zhizhen Zhao , Zhongzhou Ren . Ground-state properties of finite nuclei in relativistic Hartree-Bogoliubov theory with an improved quark mass density-dependent model. Chinese Physics C, 2026, 50(2): 1-12.
[2]	Y. P. Wang , Y. K. Wang , P. W. Zhao . Tilted-axis-cranking covariant density functional theory for the high-spin spectroscopy in ⁶⁹Ga. Chinese Physics C, 2026, 50(2): 1-5. doi: 10.1088/1674-1137/ae07b8
[3]	Xin Zhang , Yu Zhang , Xiaofeng Luo , Nu Xu . UrQMD Simulations of Higher-order Cumulants in Au+Au Collisions at High Baryon Density. Chinese Physics C, 2026, 50(2): 1-6. doi: 10.1088/1674-1137/ae0995
[4]	Huixiao Duan , Fan Zhang , Kailei Wang , Jun Su . Nuclear temperature of spectator source extracted by neutron spectra in ¹²⁴Sn,¹⁰⁷Sn + ¹²⁰Sn collisions at 600 MeV/nucleon. Chinese Physics C, 2026, 50(2): 1-10.
[5]	Jingxuan Chen , Xiaopeng Wang , Yanbing Cai , Xurong Chen , Qian Wang . Valence quark distributions of pions: insights from Tsallis entropy. Chinese Physics C, 2026, 50(1): 013103. doi: 10.1088/1674-1137/ae0998
[6]	Ronghao Hu , Qike Gu , Kejian Shi , Zezhong Wei , Meng Lv , Shiyang Zou , Yongkun Ding . Polarized neutron beams from polarized deuterium-tritium fusion with applications to magnetic field imaging in high-energy-density plasmas. Chinese Physics C, 2025, 49(12): 124102. doi: 10.1088/1674-1137/adec4f
[7]	O. A. Rubtsova , V. N. Pomerantsev , L. D. Blokhintsev . Universal momentum distributions for the spin-singlet NN channels. Chinese Physics C, 2025, 49(10): 104104. doi: 10.1088/1674-1137/addaaf
[8]	Yu Hong , Shen Qixing , Zhang Lin . Angular Distribution of Process e⁺e^－→τ⁺τ^－,τ^－→a₁υτ,a₁→ρπ and Characteristics of a₁ Meson. Chinese Physics C, 1994, 18(7): 583-590.

Access

Get Citation

Chen Jiqiang, Long Qiwei, Zhou Jin and Wang Kelin. Atomic Density Distributions of Grain Boundaries in Metals and Lifetime Spectra Characteristics of Positron Annihilation[J]. Chinese Physics C, 1989, 13(S4): 347-356.

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 1989-02-13

Article Metric

Article Views(1359)
PDF Downloads(3)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Atomic Density Distributions of Grain Boundaries in Metals and Lifetime Spectra Characteristics of Positron Annihilation

1. Centre for Fundamental Physics, University of Science and Technology of China, Hefei;
2. Institute of Metal Research, Chinese Academy of Sciences, Shenyang;
3. International Centre for Material Physics, Chinese Academy of Sciences, Shenyang

Received Date: 1989-02-13

Abstract: On the basis of a simple grain boundary model, the trapped states of positrons at grain boundaries in pure Aluminum are solved and the corresponding lifetime spectra of positron annihilation calculated. The correlations between the atomic density distributions of grain boundaries and the lifetime spectra are discussed, and the existent experimental results are explained theoretically.