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Defect production and annihilation in metals through electronic excitation by energetic heavy ion bombardment

Abstract

Defect production, radiation annealing and defect recovery are studied in Ni and Cu irradiated with low-energy ({approx}1-MeV) and high-energy ({approx}100-MeV) ions. Irradiation of Ni with {approx}100-MeV ions causes an anomalous reduction, or even a complete disappearance of the stage-I recovery. This result shows that the energy transferred from excited electrons to lattice atoms through the electron-lattice interaction contributes to the annihilation of the stage-I interstitials. This effect is also observed in Ni as a large radiation annealing during 100-MeV heavy ion irradiation. On the other hand, in Cu thin foils, we find the defect production process strongly associated with electron excitation, where the defect production cross section is nearly proportional to S{sub e}{sup 2}. (author)
Authors:
Iwase, Akihiro [1] 
  1. Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment
Publication Date:
Mar 01, 1997
Product Type:
Conference
Report Number:
JAERI-Conf-97-003; CONF-9603254-
Reference Number:
SCA: 360106; PA: JPN-97:010100; EDB-98:039010; SN: 98001890443
Resource Relation:
Conference: 7. international symposium on advanced nuclear energy research, Takasaki (Japan), 18-20 Mar 1996; Other Information: PBD: Mar 1997; Related Information: Is Part Of Recent progress in accelerator beam application. Proceedings of the 7th international symposium on advanced nuclear energy research; PB: 553 p.
Subject:
36 MATERIALS SCIENCE; NICKEL; COPPER; CRYSTAL DEFECTS; CRYSTAL LATTICES; PHYSICAL RADIATION EFFECTS; HEAVY IONS; MEV RANGE; ATOMIC DISPLACEMENTS; ELECTRONIC STRUCTURE; EXCITATION; ANNIHILATION
OSTI ID:
588329
Research Organizations:
Japan Atomic Energy Research Inst., Tokyo (Japan)
Country of Origin:
Japan
Language:
English
Other Identifying Numbers:
Other: ON: DE97764433; TRN: JP9710100
Availability:
OSTI as DE97764433
Submitting Site:
JPN
Size:
pp. 109-113
Announcement Date:

Citation Formats

Iwase, Akihiro. Defect production and annihilation in metals through electronic excitation by energetic heavy ion bombardment. Japan: N. p., 1997. Web.
Iwase, Akihiro. Defect production and annihilation in metals through electronic excitation by energetic heavy ion bombardment. Japan.
Iwase, Akihiro. 1997. "Defect production and annihilation in metals through electronic excitation by energetic heavy ion bombardment." Japan.
@misc{etde_588329,
title = {Defect production and annihilation in metals through electronic excitation by energetic heavy ion bombardment}
author = {Iwase, Akihiro}
abstractNote = {Defect production, radiation annealing and defect recovery are studied in Ni and Cu irradiated with low-energy ({approx}1-MeV) and high-energy ({approx}100-MeV) ions. Irradiation of Ni with {approx}100-MeV ions causes an anomalous reduction, or even a complete disappearance of the stage-I recovery. This result shows that the energy transferred from excited electrons to lattice atoms through the electron-lattice interaction contributes to the annihilation of the stage-I interstitials. This effect is also observed in Ni as a large radiation annealing during 100-MeV heavy ion irradiation. On the other hand, in Cu thin foils, we find the defect production process strongly associated with electron excitation, where the defect production cross section is nearly proportional to S{sub e}{sup 2}. (author)}
place = {Japan}
year = {1997}
month = {Mar}
}