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Differential ionization studies at forward angles
Springer Science and Business Media LLC - Tập 89 - Trang 129-131 - 1994
á. Kövér, G. Laricchia, M. Charlton
The energy distribution of the scattered positron and electron projectiles following ionization of Ar have been measured around 0‡ and 100 eV impact energy. At 30‡ an estimate of the absolute double differential cross-section of both outgoing particles (electron and positron) was determined at 100 eV impact energy.
Hydrogen in metals: Electronic properties
Springer Science and Business Media LLC - Tập 8 - Trang 437-444 - 1981
R. M. Nieminen
A laser ion source for on-line mass separation
Springer Science and Business Media LLC - Tập 74 - Trang 193-204 - 1992
P. Van Duppen, P. Dendooven, M. Huyse, L. Vermeeren, Z. N. Qamhieh, R. E. Silverans, E. Vandeweert
A laser ion source based on resonance photo ionization in a gas cell is proposed. The gas cell, filled with helium, consists of a target chamber in which the recoil products are stopped and neutralized, and an ionization chamber where the atoms of interest are selectively ionized by the laser light. The extraction of the ions from the ionization chamber through the exit hole and skimmer is similar...... hiện toàn bộ
Transverse field dependence of muonium relaxation: Spin exchange and chemical reaction
Springer Science and Business Media LLC - Tập 87 - Trang 965-970 - 1994
Masayoshi Senba, James J. Pan, Donald J. Arseneau, Susan Baer, Mee Shelley, Rodney Snooks, Donald G. Fleming
It has been shown experimentally that the muonium relaxation due to spin exchange is 1.5 times faster in intermediate transverse fields (say, atB=50 G, where the so-called two-frequency muonium signal is observed) than in low fields (say, atB=5 G), in agreement with an earlier theoretical prediction. It has also been confirmed experimentally that this distinct field dependence is totally absent in...... hiện toàn bộ
Studies of multilayers of Cu-Hf with a variable-energy positron beam
Springer Science and Business Media LLC - - 1994
Hideaki Matsubara, Y. Yamamoto, I. Kanazawa, T. Iwashita, Yasuo Ito, S. Takamura, Atsuko Yamaguchi, We‐Hyo Soe, Ryōichi Yamamoto
Coherent excitation of multilevel systems by laser radiation
Springer Science and Business Media LLC - Tập 37 - Trang 49-70 - 1987
A. A. Makarov
Different problems of coherent quasi-resonant excitation of multilevel systems in monochromatic radiation fields are discussed. Analytically solvable examples are presented, and, on this basis, some principal effects of cohrent multilevel dynamics are treated.
Zero and longitudinal field μSR in UAs
Springer Science and Business Media LLC - Tập 64 - Trang 449-451 - 1991
A. Kratzer, G. M. Kalvius, L. Asch, F. J. Litterst, F. N. Gygax, B. Hitti, A. Schenck, C. A. Scott, K. Mattenberger, O. Vogt
Recent Results on Ne and Mg from the MISTRAL Mass Measurement Program at ISOLDE
Springer Science and Business Media LLC - - 2001
D. Lunney, C. Monsanglant, G. Audi, G. Bollen, C. Borcea, H. Doubre, C. Gaulard, S. Henry, M. deSaintSimon, C. Thibault, C. Toader, N. Vieira
The MISTRAL experiment (Mass measurements at ISOLDE with a Transmission and Radiofrequency spectrometer on-Line), conceived for very short-lived nuclides, has reached the end of its commissioning phase. Installed in 1997, results have been obtained consistent with all aspects of the projected spectrometer performance: nuclides with half-lives as short as 30 ms have been measured and accuracies of ...... hiện toàn bộ
Temperature dependence of the hyperfine quadrupolar interaction in K2ZrF6
Springer Science and Business Media LLC - Tập 13 - Trang 307-313 - 1983
J. A. Martínez, A. M. Rodríguez, M. C. Caracoche, R. C. Mercader, A. R. López Garcia, P. C. Rivas
The thermal dependence of the hyperfine quadrupolar interaction of181Ta at Zr sites in K2ZrF6 has been studied by TDPAC between RT and 511 °C. Four phases of ever increasing symmetry have been found in the range RT-437 °C. The possible existence of a healing mechanism with an activation energy of 0.187±0.040 eV is discussed for the lattice recovery in the range 270 °C–335 °C. The results at temper...... hiện toàn bộ
Determination of Iron Oxidation State in Omphacites Applied to Geothermometry of Sudetic Eclogites
Springer Science and Business Media LLC - Tập 112 - Trang 223-226 - 1998
J. Galazka-Friedman, E.R. Bauminger, N. Bakun-Czubarow
A common mineral geothermometer for eclogites is based on Fe2+-Mg exchange reaction between garnets and clinopyroxenes. For the accurate determination of Fe2+ in omphacites, ten omphacite samples were isolated from eight Sudetic eclogites and studied by electron microprobe and Mössbauer spectroscopy. Garnet-clinopyroxene equilibration temperatures for two Sudetic eclogites were calculated.
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