Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Douglas W. McColm"'
Autor:
Thomas A. Cahill, Douglas W. McColm
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 54:91-97
A method is developed for calculating upper and lower limits to the temperature profile of a target bombarded by a proton microprobe. Some sample results for wooden and metal targets are given.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5d47a1562fd082ed5940e2935abc03b0
https://doi.org/10.1016/0168-583x(91)95497-2
https://doi.org/10.1016/0168-583x(91)95497-2
Autor:
Douglas W. McColm
Publikováno v:
Physical review. A, Atomic, molecular, and optical physics. 54(6)
Ramsey patterns for radio-frequency multiquantum transitions among Zeeman levels of the ground state of thallium, cesium, and francium have been calculated. The narrowing of these patterns observed earlier by Gould is predicted to occur only when bot
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce8260b72212017e8650749ec885bcc9
https://pubmed.ncbi.nlm.nih.gov/9914050
https://pubmed.ncbi.nlm.nih.gov/9914050
Autor:
Thomas A. Cahill, Douglas W. McColm
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 51:196-197
A simple expression for the central temperature of a convectively cooled target subjected to ion beam analysis has been obtained in the approximation that the convective-cooling mechanism is dominant.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68240cb14c5d377c5d9dade64893a0b7
https://doi.org/10.1016/0168-583x(90)90523-w
https://doi.org/10.1016/0168-583x(90)90523-w
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 14:38-44
The ability of ion beam analytical techniques such as proton induced X-ray emission (PIXE) to determine elemental content without damaging fragile objects is a key factor in their increasing use in the analysis of art and archaeological objects In th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1225579de9604f34d57698881c92157c
https://doi.org/10.1016/0168-583x(86)90420-9
https://doi.org/10.1016/0168-583x(86)90420-9
Autor:
Douglas W. McColm
Publikováno v:
Physical Review A. 7:1272-1276
A method for obtaining series solutions to nonrelativistic three-body problems is investigated; a calculation of the $1^{1}S$ ground state of the helium atom is performed as a test, and results are compared with previous work.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c733ce2c9051ae774ed83978c47a154c
https://doi.org/10.1103/physreva.7.1272
https://doi.org/10.1103/physreva.7.1272
Publikováno v:
Physical Review A. 1:595-617
A complete quantitative discussion is given of the experiments in which muonium was discovered through studies of the depolarization of muons in gases and of the Larmor precession of muonium in argon in a static magnetic field. Also described are the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::45cbf5fe03322b7e9dfed4230092eaf8
https://doi.org/10.1103/physreva.1.595
https://doi.org/10.1103/physreva.1.595
Publikováno v:
Physical Review. 138:B306-B309
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7574c91dc25c97a9257b807434af9a7
https://doi.org/10.1103/physrev.138.b306
https://doi.org/10.1103/physrev.138.b306
Autor:
Douglas W. McColm, Richard Marrus
Publikováno v:
Physical Review Letters. 15:813-815
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::db456f8bb34f49db2da0cec0da891d75
https://doi.org/10.1103/physrevlett.15.813
https://doi.org/10.1103/physrevlett.15.813
Autor:
Douglas W. McColm, Richard G. Schlecht
Publikováno v:
Physical Review. 142:11-13
The atomic-beam magnetic-resonance technique was used to determine the hyperfine-structure separations and the hyperfine-structure anomaly between the isotopes ${\mathrm{Li}}^{6}$ and ${\mathrm{Li}}^{7}$ in the $^{2}S_{\frac{1}{2}}$ ground state. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6a691b1687e557284ce8f2d158af6a2
https://doi.org/10.1103/physrev.142.11
https://doi.org/10.1103/physrev.142.11