Zobrazeno 1 - 10
of 11
pro vyhledávání: '"F. M. Rourke"'
Publikováno v:
The Journal of Chemical Physics. 31:193-199
Resolved beams of ions with energies between 10 and 150 kev were passed through thin targets and the resulting beam analyzed as to momentum and energy. Equilibrium charge ratios were obtained for various ions after passing through thin films of Ni or
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7f09dbf12a26c6e8eab31ba90d5bd799
https://doi.org/10.1063/1.1730293
https://doi.org/10.1063/1.1730293
Publikováno v:
Physical Review. 103:634-637
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a21254fdabacd0207049e2de2e422b81
https://doi.org/10.1103/physrev.103.634
https://doi.org/10.1103/physrev.103.634
Autor:
J. P. Butler, T. L. Collins, H. G. Jackson, M. J. Cabell, R. P. Schuman, F. M. Rourke, T. A. Eastwood
Publikováno v:
Physical Review. 107:1635-1638
Samples of Bk and Cf have been separated from neutronirradiated Pu and carefully purified. Pure Cf/sup 249/ daughter has been separated from the Bk/sup 249/. The Cf sample and its Cm decay products have been mass analyzed. The Bk fraction contained 3
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f590150b89ab2d3baedc4c0a0aa81c5
https://doi.org/10.1103/physrev.107.1635
https://doi.org/10.1103/physrev.107.1635
Publikováno v:
Physical Review. 109:437-442
The absolute alpha energy of ${\mathrm{Po}}^{210}$ alpha particles was measured by a 180\ifmmode^\circ\else\textdegree\fi{} magnetic spectrometer. The value obtained was 5.3054\ifmmode\pm\else\textpm\fi{}0.0010 Mev (absolute volts). Measurement of th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0cba505ac62f7532cbd80bd5abd0b80a
https://doi.org/10.1103/physrev.109.437
https://doi.org/10.1103/physrev.109.437
Publikováno v:
Applied Spectroscopy. 12:46-52
A three stage mass spectrometer, utilizing two consecutive magnetic focusing lenses of 20″ radii followed by a 20” radius of curvature electrostatic analyzer, is described An abundance sensitivity of 1010 was measured for this instrument in the l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::15830c17cb65c3e3049153822a752119
https://doi.org/10.1366/000370258774615546
https://doi.org/10.1366/000370258774615546
Publikováno v:
Applied Spectroscopy. 17:39-44
A cascade spectrometer has been designed and constructed in which the ion beam traverses two successive 180° trajectories. This instrument differs from previous two-stage mass spectrometers in that a large single magnet (rather than tandem magnets)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::faa8d4457ffd7fc3322760e8554ad725
https://doi.org/10.1366/000370263774415425
https://doi.org/10.1366/000370263774415425
Publikováno v:
IRE Transactions on Nuclear Science. 8:13-24
The design of a 30-inch radius combined velocity and direction focusing mass analyzer is described. Application of this instrument as a high purity isotopic separator for research in nuclear physics, metallurgy, and semiconductors is also discussed.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dee07acc445e9bdc394d3229c45278fb
https://doi.org/10.1109/tns2.1961.4315824
https://doi.org/10.1109/tns2.1961.4315824
Publikováno v:
Nature. 234:132-134
Mass spectrometric measurements of plutonium isolated from Precambrian bastnasite confirm the presence of 244Pu in nature. Although the existence of 244Pu as an extinct radioactivity has been postulated to explain the xenon isotope ratios observed in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9dcf4a5d3f2551423d94ba78c252a4c4
https://doi.org/10.1038/234132a0
https://doi.org/10.1038/234132a0
Publikováno v:
Review of Scientific Instruments. 32:455-456
>The doping of metals and semiconductors with highly resolved ion beams eliminates reagent impurity contamination, provides high isotopic enrichment, and allows cross section determinations with 10/sup -8/ to 10/sup -11/ g of material thus eliminatin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a1a273e6e0eb0c50754fcfb0713ea579
https://doi.org/10.1063/1.1717405
https://doi.org/10.1063/1.1717405
Publikováno v:
Review of Scientific Instruments. 29:182-182
One of the fundamental limitations in mass spectrometry arises in attempts to differentiate betwoeen atomic and nuclear ions having the same charge to mass ratio. Partial dissociation of complex ions in a mass spectrometer has been observed. By using
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7efff7ea7594720d520822ba3f1892a1
https://doi.org/10.1063/1.1716141
https://doi.org/10.1063/1.1716141