Zobrazeno 1 - 10
of 145
pro vyhledávání: '"W. Triftshäuser"'
Autor:
P. Sperr, A. Hempel, M. Hempel, David T. Britton, D. Knoesen, W. Triftshäuser, Gottfried Kögel, Margit Härting
Publikováno v:
Journal of Non-Crystalline Solids. :249-253
Low-hydrogen-concentration a-Si:H grown by HW-CVD forms a continuous random network with no detectable free volume in the form of microvoids, and no evidence of a microcrystalline phase. Over a wide temperature range we observe a single positron stat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c7138257b9c697987164418325961e35
https://doi.org/10.1016/s0022-3093(01)01165-6
https://doi.org/10.1016/s0022-3093(01)01165-6
Autor:
W Triftshäuser
Publikováno v:
Vacuum. 58:33-44
Positrons are very sensitive probes for vacancy-type defects of atomic dimensions, e.g. vacancies, vacancy agglomerates, dislocations or inner surfaces. It is well established that positrons can be trapped at these defects and, because of the locally
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6de6640a88d6e37c7b7ea4b4e9b3d09
https://doi.org/10.1016/s0042-207x(99)00198-0
https://doi.org/10.1016/s0042-207x(99)00198-0
Publikováno v:
Journal of Physics: Condensed Matter. 8:L89-L94
Observation of copious positron re-emission from crystalline 6H-SiC, with no pre-treatment and without the need for ultra-high-vacuum conditions, suggests that this material may form the basis of an important new moderator for the production of monoe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e2ed8b206889a76dd148da0438ae5ce9
https://doi.org/10.1088/0953-8984/8/7/002
https://doi.org/10.1088/0953-8984/8/7/002
Autor:
W. Triftshäuser
Publikováno v:
Journal de Physique IV Proceedings
Journal de Physique IV Proceedings, EDP Sciences, 1995, 05 (C1), pp.C1-217-C1-226. ⟨10.1051/jp4:1995125⟩
Journal de Physique IV Proceedings, EDP Sciences, 1995, 05 (C1), pp.C1-217-C1-226. ⟨10.1051/jp4:1995125⟩
Positron annihilation is a well established method in solid state physics and material science. The positron being a very sensitive probe, can give very precise information on the momentum distribution of electrons in metals and alloys as well as on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3a11d25a5d566494b983940f3f9049d7
https://doi.org/10.1051/jp4:1995125
https://doi.org/10.1051/jp4:1995125
Autor:
W. Triftshäuser
Publikováno v:
Acta Physica Hungarica. 75:61-69
Positron annihilation is a well-established method in solid state physics and material science. The positron being a very sensitive probe, can give very precise information on the momentum distribution of electrons in metals and alloys as well as on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c64c43c500058d441c0882e7cc6a1b5
https://doi.org/10.1007/bf03156559
https://doi.org/10.1007/bf03156559
Publikováno v:
Applied Physics Letters. 69:1867-1869
Positron beam lifetime spectroscopy has been utilized to study the depth distribution of vacancy‐type defects in molecular beam epitaxy GaAs grown at low temperature. Lifetime spectra were measured as a function of positron energy. From the analysi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3a7e4b5870117dd418a6b4ca1c03e534
https://doi.org/10.1063/1.117460
https://doi.org/10.1063/1.117460
Autor:
W. Triftshäuser, C.Y. Huang, M. Leon, R. L. Hutson, M. E. Schillaci, Don M. Parkin, W.R. Wampler, W.B. Gauster, R. H. Heffner
Publikováno v:
Solid State Communications. 24:619-622
Positive muon spin rotation experiments for polycrystalline Cu and Al from 19K to temperatures near the melting points are reported. At low temperatures, the depolarization associated with localization of the muons at octahedral interstitial sites is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b19ea075412d77b85c2b1ef552b5b62
https://doi.org/10.1016/0038-1098(77)90375-1
https://doi.org/10.1016/0038-1098(77)90375-1
Publikováno v:
Journal of Nuclear Materials. 88:273-278
Measurements of the positron annihilation coincidence count rate at the peak of the angular correlation curve (CCR) in uranium were performed as a function of temperature between 550 and 1350 K. The α → β and β → γ phase transformations are r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0ea6d564818d9650928ed34d57982bdc
https://doi.org/10.1016/0022-3115(80)90283-4
https://doi.org/10.1016/0022-3115(80)90283-4
Autor:
J. D. McGervey, W. Triftshäuser
Publikováno v:
Applied Physics. 6:177-180
Monovacancy formation energies in copper, silver, and gold have been deduced from the temperature variation of the peak counting rate in the angular correlation curve of positron annihilation radiation from these metals. The counting rate was tempera
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d770929d3952443b8281fdb8b1c880d5
https://doi.org/10.1007/bf00883748
https://doi.org/10.1007/bf00883748
Publikováno v:
Physical Review B. 9:3321-3324
We have measured the angular correlation of positron-annihilation radiation from single crystals of aluminum in which voids had been induced by neutron irradiation. The angular-correlation curve is narrower than that for aluminum containing vacancies
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9ecbc825899fb44926eebf6a3a98393e
https://doi.org/10.1103/physrevb.9.3321
https://doi.org/10.1103/physrevb.9.3321