Zobrazeno 1 - 10
of 236
pro vyhledávání: '"K.P. Gopinathan"'
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 179:200-208
TDPAC measurements on the reference and untreated sample indicate a loss in anisotropy which is attributed mainly to the association of probe atoms with defects produced by (n,γ) reactions with isotopes of Ni and experiencing combined magnetic and q
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f1ca52ac0db75303640696b3a8dfdde6
https://doi.org/10.1016/s0168-583x(01)00474-8
https://doi.org/10.1016/s0168-583x(01)00474-8
Publikováno v:
Bulletin of Materials Science. 23:201-206
Time differential perturbed angular correlation (TDPAC) measurement onAlHf reference sample has shown that a fraction 0.88 of probe nuclei are defect free and are occupying the substitutional sites in fcc Al matrix, and the remaining are associated w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::57b76983c213aef78d05db10881e142e
https://doi.org/10.1007/bf02719910
https://doi.org/10.1007/bf02719910
Publikováno v:
Journal of Nuclear Materials. 265:139-145
Time differential perturbed angular correlation (TDPAC) at the 482 keV state of 181Ta and positron lifetime measurements were performed on homogeneously helium implanted ZrHf samples. TDPAC on the as-implanted sample shows the association of 0.12±0.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d0333ca476419171e75ffcad052e9f2
https://doi.org/10.1016/s0022-3115(98)00513-3
https://doi.org/10.1016/s0022-3115(98)00513-3
Publikováno v:
Bulletin of Materials Science. 21:427-431
Time differential perturbed angular correlation (TDPAC) and positron life-time measurements on cold-worked and hydrogen chargedNbHf indicate a strong binding of hydrogen decorated vacancy clusters with Hf impurities. Both TDPAC and positron lifetime
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f14dcf0351b8478856c439883151005f
https://doi.org/10.1007/bf02744930
https://doi.org/10.1007/bf02744930
Publikováno v:
Bulletin of Materials Science. 20:535-540
Al61·4Cu22·7Fe15·9, Al63·2Cu21·8Fe15 and Al71Cu14Fe15 have been studied by Mossbauer, positron annihilation and X-ray diffraction techniques. The positron lifetime, measured as a function of temperature, in Al61·4Cu22·7Fe15·9 shows a two-step
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f905f056bdb43934943338f6992d8ee9
https://doi.org/10.1007/bf02744768
https://doi.org/10.1007/bf02744768
Autor:
R. Govindaraj, K.P. Gopinathan
Publikováno v:
Bulletin of Materials Science. 20:475-479
Time differential perturbed angular correlation (TDPAC) measurement performed on the 482 keV level of181Ta probe nuclei inp-implantedNbHf sample shows that hydrogen decorated vacancy complexes are trapped by 6% of probe nuclei experiencing a Lorentzi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb1194486958b61904ccc1b2ecdc97c3
https://doi.org/10.1007/bf02744759
https://doi.org/10.1007/bf02744759
Autor:
K.P. Gopinathan, R. Govindaraj
Publikováno v:
Journal of Nuclear Materials. 231:141-145
The interaction between Hf impurities and vacancies in α-Zr metal containing 1 at.% Hf has been investigated by time differential perturbed angular correlation (TDPAC) measurements on the 482 keV level of 181Ta probe nuclei in the sample. All 181 Ta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::84cbc4445dbbd6ebf581a6e8cd72762b
https://doi.org/10.1016/0022-3115(96)00199-7
https://doi.org/10.1016/0022-3115(96)00199-7
Publikováno v:
Journal of Nuclear Materials. 231:55-62
Growth of helium bubbles in palladium, having different pre-irradiation sample treatments and subsequently implanted with 50 appm of helium, has been investigated by positron lifetime spectroscopy. Presence of dislocations has been found to enhance t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1fa8202eac4226051586f495728a2ab4
https://doi.org/10.1016/0022-3115(96)00359-5
https://doi.org/10.1016/0022-3115(96)00359-5
Autor:
K.P. Gopinathan, R. Rajaraman
Publikováno v:
Materials Science Forum. :261-268
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::49f3579353745ae66c4b5a68cbc2387e
https://doi.org/10.4028/www.scientific.net/msf.175-178.261
https://doi.org/10.4028/www.scientific.net/msf.175-178.261
Publikováno v:
Materials Science Forum. :489-492
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d5265e3bc7e10b810203db755de45cb2
https://doi.org/10.4028/www.scientific.net/msf.175-178.489
https://doi.org/10.4028/www.scientific.net/msf.175-178.489