scholarly journals Zirconium-ion implantation of zircaloy-4 investiged by slow positron beam

2007 ◽  
Vol 56 (11) ◽  
pp. 6543
Author(s):  
Hao Xiao-Peng ◽  
Wang Bao-Yi ◽  
Yu Run-Sheng ◽  
Wei Long
Keyword(s):  
Ion Implantation ◽  
Positron Beam ◽  
Slow Positron

Ion-Implantation Induced Defects in ZnO Studied by a Slow Positron Beam

2004 ◽  
Vol 445-446 ◽  
pp. 57-59 ◽  
Author(s):  
Z.Q. Chen ◽  
Masaki Maekawa ◽  
Takashi Sekiguchi ◽  
Ryoichi Suzuki ◽  
Atsuo Kawasuso
Keyword(s):  
Ion Implantation ◽  
Positron Beam ◽  
Slow Positron ◽  
Induced Defects

N+ion-implantation-induced defects in ZnO studied with a slow positron beam

2003 ◽  
Vol 16 (2) ◽  
pp. S293-S299 ◽  
Author(s):  
Z Q Chen ◽  
T Sekiguchi ◽  
X L Yuan ◽  
M Maekawa ◽  
A Kawasuso
Keyword(s):  
Ion Implantation ◽  
Positron Beam ◽  
Slow Positron ◽  
Induced Defects

scholarly journals On the Limitations of Positron Annihilation Spectroscopy in the Investigation of Ion-Implanted FeCr Samples

Metals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1689
Author(s):  
Vladimir Slugen ◽  
Jarmila Degmova ◽  
Stanislav Sojak ◽  
Martin Petriska ◽  
Pavol Noga ◽  
...  
Keyword(s):  
Ion Implantation ◽  
Positron Annihilation ◽  
Neutron Irradiation ◽  
Surface Region ◽  
Positron Beam ◽  
Positron Annihilation Spectroscopy ◽  
Radiation Embrittlement ◽  
Nuclear Facilities ◽  
Near Surface ◽  
Slow Positron

New materials for advanced fission/fusion nuclear facilities must inevitably demonstrate resistance to radiation embrittlement. Thermal and radiation ageing accompanied by stress corrosion cracking are dominant effects that limit the operational condition and safe lifetime of the newest nuclear facilities. To study these phenomena and improve the current understanding of various aspects of radiation embrittlement, ion bombardment experiments are widely used as a surrogate for neutron irradiation. While avoiding the induced activity, typical for neutron-irradiated samples, is a clear benefit of the ion implantation, the shallow near-surface region of the modified materials may be a complication to the post-irradiation examination (PIE). However, microstructural defects induced by ion implantation can be effectively investigated using various spectroscopic techniques, including slow-positron beam spectroscopy. This method, typically represented by techniques of positron annihilation lifetime spectroscopy and Doppler broadening spectroscopy, enables a unique depth-profile characterisation of the near-surface region affected by ion bombardment or corrosion degradation. One of the best slow-positron beam facilities is available at the pulsed low-energy positron system (PLEPS), operated at FRM-II reactor in Munich (Germany). Bulk studies (such as high energy ion implantation or neutron irradiation experiments) can be, on the other hand, effectively performed using radioisotope positron sources. In this paper, we outline some basics of the two approaches and provide some recommendations to improve the validity of the positron annihilation spectroscopy (PAS) data obtained on ion-irradiated samples using a conventional 22Na positron source.

(DURIP98/99) Slow Positron Beam for Material and Surface Characterization

2000 ◽  
Author(s):  
Yanching C. Jean ◽  
Thomas C. Sandreczki
Keyword(s):  
Surface Characterization ◽  
Positron Beam ◽  
Slow Positron

Depth profiling of defects in nitrogen implanted silicon using a slow positron beam

1999 ◽  
Vol 149 (1-4) ◽  
pp. 175-180 ◽  
Author(s):  
J.W. Taylor ◽  
A.S. Saleh ◽  
P.C. Rice-Evans ◽  
A.P. Knights ◽  
C. Jeynes
Keyword(s):  
Depth Profiling ◽  
Positron Beam ◽  
Slow Positron

Vacancy defects in epitaxial La0.7Sr0.3MnO3thin films probed by a slow positron beam

2004 ◽  
Vol 37 (13) ◽  
pp. 1841-1844 ◽  
Author(s):  
S W Jin ◽  
X Y Zhou ◽  
W B Wu ◽  
C F Zhu ◽  
H M Weng ◽  
...  
Keyword(s):  
Positron Beam ◽  
Slow Positron ◽  
Vacancy Defects

Defect characterization of CdTe thin films using a slow positron beam

2007 ◽  
Vol 4 (10) ◽  
pp. 3659-3663 ◽  
Author(s):  
S. Neretina ◽  
D. Grebennikov ◽  
R. A. Hughes ◽  
M. Weber ◽  
K. G. Lynn ◽  
...  
Keyword(s):  
Thin Films ◽  
Positron Beam ◽  
Defect Characterization ◽  
Slow Positron ◽  
Cdte Thin Films

Status and Perspectives for a Slow Positron Beam Facility at the HH—NIPNE Bucharest

2009 ◽  
Author(s):  
Mihai Straticiuc ◽  
Liviu Stefan Craciun ◽  
Olimpiu Constantinescu ◽  
Ionica Alina Ghita ◽  
Cristina Ionescu ◽  
...  
Keyword(s):  
Positron Beam ◽  
Slow Positron
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