NATURE OF BLACK-SPOT DAMAGE IN IRRADIATED GOLD

被引:10
作者
EADES, JA
机构
[1] Metal Physics Group, Cavendish Laboratory, Cambridge
来源
PHILOSOPHICAL MAGAZINE | 1969年 / 19卷 / 157期
关键词
D O I
10.1080/14786436908217762
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
High purity gold was irradiated with neutrons in a reactor and with high energy α-particles. The resulting black-spot damage was examined by electron microscopy. From stereomicrographs of foils decorated on one surface it was possible to measure the distance of certain defects from that surface. The direction of black-white streaking of the same defects was observed in the exact Bragg orientation. From this information the sign of the defects (whether they are of interstitial or of vacancy character) was deduced in each case. Foils about 1000 Å thick were α-irradiated at room temperature and the black-spot defects found to be of interstitial type. In the neutron irradiation case, bulk material was irradiated at about 65°C and the defects were found to have a vacancy character. In each case the symmetry of the black-white images was such that the defects are thought to be Frank loops. The result of the sign determination for the α-irradiation is in conflict with previous results. The discrepancy is believed to result from a previously unremarked denuded layer 40-50 Å deep at the surface. © 1969 Taylor & Francis Group, LLC.
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页码:47 / &
相关论文
共 25 条
[1]   ON DIFFRACTION CONTRAST FROM INCLUSIONS [J].
ASHBY, MF ;
BROWN, LM .
PHILOSOPHICAL MAGAZINE, 1963, 8 (94) :1649-&
[2]   DIFFRACTION CONTRAST FROM SPHERICALLY SYMMETRICAL COHERENCY STRAINS [J].
ASHBY, MF ;
BROWN, LM .
PHILOSOPHICAL MAGAZINE, 1963, 8 (91) :1083-&
[3]   A COMPARISON BETWEEN NEUTRON DAMAGE IN ANNEALED GOLD AND IN QUENCHED GOLD [J].
COTTERILL, RM .
APPLIED PHYSICS LETTERS, 1966, 9 (01) :29-+
[4]   NACHWEIS UND ENTSTEHUNG VON ZWISCHENGITTERATOM-AGGLOMERATEN IN IONENBESTRAHLTEN KUPFERFOLIEN [J].
DIEPERS, H ;
DIEHL, J .
PHYSICA STATUS SOLIDI, 1966, 16 (02) :K109-&
[5]   A TECHNIQUE FOR CUTTING DISKS FROM SHEET GOLD [J].
EADES, JA ;
MCINTYRE, KG .
JOURNAL OF PHYSICS E-SCIENTIFIC INSTRUMENTS, 1968, 1 (04) :491-&
[6]   A NEW METHOD FOR MEASURING DEPTHS OF EMBEDDED RADIOTRACER ATOMS USING A PRECISION BETA-RAY SPECTROMETER [J].
GRAHAM, RL ;
PRINGLE, JPS ;
DAVIES, JA ;
BROWN, F .
CANADIAN JOURNAL OF PHYSICS, 1963, 41 (10) :1686-&
[7]   DETERMINATION OF SENSE OF BURGERS VECTOR OF A DISLOCATION FROM ITS ELECTRON MICROSCOPE IMAGES [J].
GROVES, GW ;
WHELAN, MJ .
PHILOSOPHICAL MAGAZINE, 1962, 7 (81) :1603-&
[8]   VACANCY CLUSTERS AND LOOPS IN ION BOMBARDED COPPER [J].
HESKETH, RV ;
RICKARDS, GK .
PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1966, 289 (1418) :353-&
[9]  
HIRSCH PB, 1965, ELECTRON MICROSCOPY
[10]   DIRECT OBSERVATION OF RADIATION DAMAGE PRODUCED IN COPPER GOLD AND ALUMINUM DURING ION BOMBARDMENTS AT LOW TEMPERATURES IN ELECTRON MICROSCOPE [J].
HOWE, LM ;
MCGURN, JF ;
GILBERT, RW .
ACTA METALLURGICA, 1966, 14 (07) :801-&