Variable energy positron beam studies of defects in heavy ion implanted palladium

Horodek, P.; Skuratov, V.A.

doi:10.1016/j.surfcoat.2016.04.009

Cited by 13 publications

(9 citation statements)

References 26 publications

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“…Their concentration is higher for the samples implanted with lower energy of Xe 26+ . In our previous VEP studies with 167 MeV Xe 26+ [17][18][19] and 107 MeV Kr 17+ [20] ions obtained profiles were characterized only by the decrease and saturation of S parameter with the positron energy. Different behavior of the reported distributions for the implanted targets can be explained by reaching the implantation range marked by the Bragg peak.…”

Section: Resultsmentioning

confidence: 94%

Positron Beam Studies of Radiation Damage Induced by Various Energy Heavy Ions of Xe²⁶⁺ in Iron

et al. 2019

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Experimental studies of pure iron exposed to Xe 26+ irradiation are reported. Implantations were made with the fluence of 5 × 10 13 ions/cm 2 using 167 MeV ions moderated to 122.5, 77.0, and 44.5 MeV. Investigations were performed with variable energy positron beam (VEP). Doppler broadening spectroscopy (DB) was applied. The analysis of obtained results gives information about the presence of various kind of open-volume defects. Two layers with different values of positron diffusion lengths were found in implanted samples. The deeper one was more defected.

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Section: Resultsmentioning

confidence: 94%

Positron Beam Studies of Radiation Damage Induced by Various Energy Heavy Ions of Xe²⁶⁺ in Iron

et al. 2019

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“…During the years 2014-2018 about 80 runs for PAS were performed at the LEPTA facility. The samples of irradiated metals [7][8][9][10][11] as well as subjected to a surface treatment [12,13] were subsequently investigated by the DBAL PAS method.…”

Section: Studies Using Dbal Pas Methods At Lepta Facilitymentioning

confidence: 99%

Development of Positron Annihilation Spectroscopy at Joint Institute for Nuclear Research

et al. 2019

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The method of Positron Annihilation Spectroscopy (PAS) has been under development and application since 2013 at the Low Energy Particle Toroidal Accumulator (LEPTA) facility in the Dzhelepov Laboratory of Nuclear Problems of JINR. The PAS at the LEPTA is based on the slow positron injector of original design that provides a positron flux of a high monochromaticity. The FWHM of positron energy at the exit of the positron source is of 1.5-3 eV. The positron energy on the target can be varied in the range 50 eV-36 keV (90 keV in the nearest future) with an accuracy of not less than 1%. The first version of a special channel for transportation of the positrons from the source to the target was constructed in 2013. Presently the research is carried out applying the method of the Doppler Broadening of Annihilation Line. In 2018 the channel was developed for application of Positron Annihilation Lifetime Spectroscopy. It will be equipped with instrumentation according to original scheme presented in this article. This article describes three versions of PAS, their peculiarities and specific scheme as well as the parameters of the experimental equipment for PAS used and developed at LEPTA.

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“…The mentioned apparatus working at JINR was used to perform many investigations in the field of material science [15][16][17][18][19][20][21][22].…”

Section: Pas At Jinrmentioning

confidence: 99%

Positron Annihilation Spectroscopy in Material studies

Horodek

Khiem²,

Siemek³

et al. 2019

Comm. in Phys.

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Positron annihilation spectroscopy (PAS) is a method dedicated to detection of open-volume type of defects in materials. Nowadays, this technique is of a great interest due to the practical character of obtained results. New devices using monoenergetic positron beams are built. The paper presents the basics of PAS, a description of popular experimental techniques and their application on the basis of results obtained in the frame of collaboration between Joint Institute for Nuclear Research (JINR), Institute of Physics - Vietnamese Academy of Science and Technology (VAST) and Vietnam Atomic Energy Institute (Vinatom).. The positron beam with energy up to 35 keV and other apparatus for PAS studies are under operation in Dubna.

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Variable energy positron beam studies of defects in heavy ion implanted palladium

Cited by 13 publications

References 26 publications

Positron Beam Studies of Radiation Damage Induced by Various Energy Heavy Ions of Xe²⁶⁺ in Iron

Positron Beam Studies of Radiation Damage Induced by Various Energy Heavy Ions of Xe²⁶⁺ in Iron

Development of Positron Annihilation Spectroscopy at Joint Institute for Nuclear Research

Positron Annihilation Spectroscopy in Material studies

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Variable energy positron beam studies of defects in heavy ion implanted palladium

Cited by 13 publications

References 26 publications

Positron Beam Studies of Radiation Damage Induced by Various Energy Heavy Ions of Xe26+ in Iron

Positron Beam Studies of Radiation Damage Induced by Various Energy Heavy Ions of Xe26+ in Iron

Development of Positron Annihilation Spectroscopy at Joint Institute for Nuclear Research

Positron Annihilation Spectroscopy in Material studies

Contact Info

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Positron Beam Studies of Radiation Damage Induced by Various Energy Heavy Ions of Xe²⁶⁺ in Iron

Positron Beam Studies of Radiation Damage Induced by Various Energy Heavy Ions of Xe²⁶⁺ in Iron