Zobrazeno 1 - 10
of 18
pro vyhledávání: '"G. M. Copland"'
Publikováno v:
Canadian family physician Medecin de famille canadien. 22
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::c63171be40e69ef1f2b57c4e5e474a0f
https://pubmed.ncbi.nlm.nih.gov/21308037
https://pubmed.ncbi.nlm.nih.gov/21308037
Autor:
G M Copland, M M Salleh
Publikováno v:
Journal of Physics C: Solid State Physics. 11:L777-L781
The multiple-scattering-Xalpha method is used to calculate the crystal-field parameters for Pr3+:LaCl3. The necessity of using more than one Watson sphere for highly charged clusters is discussed. The calculation shows that this multiple-scattering-X
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::02fd371b42f803dcf237bc5dcf8d8be4
https://doi.org/10.1088/0022-3719/11/18/008
https://doi.org/10.1088/0022-3719/11/18/008
Publikováno v:
Journal of Physics C: Solid State Physics. 11:2029-2037
Expressions are given for the configuration interaction contributions to the correlation crystal field in lanthanide ions. Contributions to the parameters B0K(LL) are calculated for the system Pr3+-Cl-. Wavefunctions derived from a modified Hartree-F
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8204f7bde065d64882630607a8b65329
https://doi.org/10.1088/0022-3719/11/10/013
https://doi.org/10.1088/0022-3719/11/10/013
Publikováno v:
Journal of Physics C: Solid State Physics. 2:862-869
The technique of ENDOR has been used on the isotopes 155Gd and 157Gd in Gd3+ in CeO2 single crystals in order to obtain accurate values of the nuclear magnetic moments and the hyperfine structure parameters. The values obtained are given below. 155Gd
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e76d402c756f135f42e34cab09898951
https://doi.org/10.1088/0022-3719/2/5/313
https://doi.org/10.1088/0022-3719/2/5/313
Publikováno v:
Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences. 309:119-139
The energy level scheme for 4 f 13 in a cubic crystal field is relatively simple. The effect of a perturbation Hamiltonian containing electron and nuclear Zeeman terms and magnetic dipole and electric quadrupole hyperfine interactions can therefore b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c2a6b7083012f65840da4d8627d4d2a
https://doi.org/10.1098/rspa.1969.0032
https://doi.org/10.1098/rspa.1969.0032
Publikováno v:
Journal of Physics B: Atomic and Molecular Physics. 4:1388-1392
For pt. I see abstr. A25410 of 1971. The usefulness of a 'model building' approach to rare earth configuration interaction is emphasized as an alternative to doing full ab initio calculations. Second order perturbation theory is used to calculate the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7eb3897bdcb49b2f6c3395d3b41c5a3
https://doi.org/10.1088/0022-3700/4/10/024
https://doi.org/10.1088/0022-3700/4/10/024
Autor:
G. M. Copland, Peter M. Levy
Publikováno v:
Physical Review B. 1:3043-3050
The empirical data necessary to determine all the parameters in the exchange interaction between a pair of orbitally degenerate ions do not exist for any system. Given this paucity, we have resorted to using the best available theoretical estimates o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1108b33070ec985c003268b4d87e2107
https://doi.org/10.1103/physrevb.1.3043
https://doi.org/10.1103/physrevb.1.3043
Autor:
D Bloor, G M Copland
Publikováno v:
Reports on Progress in Physics. 35:1173-1264
The absorption spectra of magnetic ions in crystalline solids, observed in the spectral range between approximately 5 and 200 cm−1, are surveyed. The electronic excitations of single ions are considered first. The measurements of line positions, in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2af3057d60bf918ac32a1cddfaa6993b
https://doi.org/10.1088/0034-4885/35/3/304
https://doi.org/10.1088/0034-4885/35/3/304
Publikováno v:
Journal of Physics B: Atomic and Molecular Physics. 4:1605-1610
For pt. II see ibid., vol.4, 1388 (1971). Numerical estimates of the Trees parameters alpha , beta , gamma for Pr2+ (4f3) are reported. Configuration interactions through second order excitations to bound states are considered in detail. It is shown
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e35317ccf3bd635ff6b4db99e4b4a722
https://doi.org/10.1088/0022-3700/4/12/009
https://doi.org/10.1088/0022-3700/4/12/009
Autor:
G M Copland, D P Breen
Publikováno v:
Journal of Physics C: Solid State Physics. 1:146-148
The spin-lattice relaxation time T1 of Tb3+ in CaWO4 has been measured in the temperature range 13-9 °K. The dependence of the relaxation rate on temperature can be described by This suggests that the first excited state lies at 788 °K above the gr
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https://doi.org/10.1088/0022-3719/1/1/316
https://doi.org/10.1088/0022-3719/1/1/316