Zobrazeno 1 - 10
of 66
pro vyhledávání: '"Alan V. Barnes"'
Autor:
H. Gregg, G. Overturf, D. H. G. Schneider, Alan V. Barnes, I. A. Mowat, J. W. McDonald, A. V. Hamza, Thomas Schenkel, M. W. Newman, T. R. Niedermayr
Publikováno v:
Journal of Energetic Materials. 19:101-118
Highly Charged Ion (HCI) Time-of-Flight (TOF) Secondary Ion Mass Spectrometry (SIMS) has been employed to analyze the changes in the surface composition of TATB caused by low energy electron, ultraviolet, and Gamma ray irradiation. Comparisons are ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fcb45cb39b6ea26bc14db70a3c5990cd
https://doi.org/10.1080/07370650108216122
https://doi.org/10.1080/07370650108216122
Autor:
Alex V. Hamza, Alan V. Barnes, Ed Magee, Mike Newman, Thomas Schenkel, Joseph W. McDonald, Dieter H. Schneider
Publikováno v:
Review of Scientific Instruments. 71:2077-2081
A highly charged ion based time-of-flight emission microscope has been designed, which improves the surface sensitivity of static SIMS measurements because of the higher ionization probability of highly charged ions. Slow, highly charged ions are pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::465a757b69119a9cd9e771e43954513a
https://doi.org/10.1063/1.1150582
https://doi.org/10.1063/1.1150582
Autor:
Z. Hargitai, Y. Yao, Royal G. Albridge, Wolfgang Husinsky, Gerhard Betz, Gunter Lüpke, Alan V. Barnes, Jonathan M. Gilligan, Vernita Gordon, John C. Tully, B. Pratt Ferguson, M. M. Albert, Norman Tolk
Publikováno v:
Physical Review Letters. 81:550-553
An unexpected pronounced enhancement is observed in sputtering yields per atom for ${\mathrm{N}}_{2}^{+}$ compared to ${\mathrm{N}}^{+}$ from a polycrystalline gold target. This effect is seen when the kinetic energy per projectile atom is below 500
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::576d465485be5239344d15006e154522
https://doi.org/10.1103/physrevlett.81.550
https://doi.org/10.1103/physrevlett.81.550
Autor:
Gunter Lüpke, J. Sturmann, Norman Tolk, A. Ueda, J.L. Davidson, Jonathan M. Gilligan, Alan V. Barnes, Royal G. Albridge
Publikováno v:
Applied Surface Science. :59-63
We report first studies of photodesorption from diamond films using the Vanderbilt Free-Electron Laser at two infrared wavelengths: 3.5 μ m, corresponding to localized absorption by C–H bonds at grain boundaries, and 5 μ m, corresponding to two-p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6f5fb16466fa892d2316c4f893caf0d
https://doi.org/10.1016/s0169-4332(97)00610-7
https://doi.org/10.1016/s0169-4332(97)00610-7
Autor:
Thomas Schenkel, Barney Lee Doyle, D. H. Schneider, D. S. Walsh, Alex V. Hamza, Alan V. Barnes
Publikováno v:
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 16:1384-1387
B–SiO2 films formed by chemical vapor deposition on silicon substrates were analyzed by time-of-flight secondary ion mass spectrometry using slow Xe44+ and Th70+ as primary ions. Boron concentrations of 2×1021 cm−3 determined directly from posit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0bd0686b8aca0b5e4e517c0ea01418a
https://doi.org/10.1116/1.581523
https://doi.org/10.1116/1.581523
Autor:
Xue Yang, J. T. McKinley, M. T. Graham, Norman Tolk, Giorgio Margaritondo, Royal G. Albridge, Alan V. Barnes, W. Wang, Jonathan M. Gilligan, J.L. Davidson, A. Ueda, J. Sturmann
Publikováno v:
Scopus-Elsevier
As synchrotron radiation sources have been used for many experiments in the ultraviolet and X-ray regimes, the free-electron laser is an excellent source for a wide array of infrared-photon projects and applications. The free-electron laser delivers
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ceecc562f605db2f7007799e647c20bb
https://doi.org/10.12693/aphyspola.91.689
https://doi.org/10.12693/aphyspola.91.689
Publikováno v:
Physical Review B. 55:2854-2858
We have observed anomalous temperature dependence in the ion-induced desorption of excited sodium atoms from sodium fluoride crystals. The fluorescence yield of the 3p-3d transition at 8195 {Angstrom}, and the 3p-4d transition at 5688 {Angstrom} incr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c1e850384c99cf5d480f84f8bb74b73b
https://doi.org/10.1103/physrevb.55.2854
https://doi.org/10.1103/physrevb.55.2854
Autor:
Royal G. Albridge, Alan V. Barnes, Giorgio Margaritondo, G.A. Mensing, J. T. McKinley, Vernita Gordon, J.L. Davidson, Norman Tolk, J. Sturmann, B.M. Barnes
Publikováno v:
Applied Surface Science. 106:205-210
The free-electron laser (FEL) has become an important tool for producing high-intensity photon beams, especially in the infrared. Synchrotron radiation's primary spectral domains are in the ultraviolet and X-ray region. FEL's are therefore excellent
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b4f837d5b48125bb670e45fc39fe3482
https://doi.org/10.1016/s0169-4332(96)00378-9
https://doi.org/10.1016/s0169-4332(96)00378-9
Publikováno v:
Journal of Non-Crystalline Solids. 203:62-68
A luminescence band at 2.75 eV in silica glass, Corning 7940, excited with 1 keV electron beam was measured as a function of beam current and dose. The initial luminescent intensities at 2.75 eV, taken within 1 s of the beginning of irradiation, were
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9e51ef22cd5cf0c60f00160883b07a69
https://doi.org/10.1016/0022-3093(96)00335-3
https://doi.org/10.1016/0022-3093(96)00335-3
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 115:415-420
Defects created by 20 keV ion bombardment of NaF and LiF crystals have been investigated by optical absorption and luminescence measurements. The F center band and F-center aggregate bands have been identified in NaF and LiF crystals under argon ion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::25d5cc3ec3cab086dbeca69f1dc5e041
https://doi.org/10.1016/0168-583x(96)00179-6
https://doi.org/10.1016/0168-583x(96)00179-6