Abstract
Precessions of the 2 +1 states in198Pt and192Os have been measured in the enhanced transient hyperfine magnetic field acting on these nuclei as they recoiled through thin polarized cobalt foils. Two separate targets consisting of contiguous layers of198Pt and192Os electrodeposited on ∼1 μm and ∼4 μm Co foils were employed. The levels of interest were Coulomb excited by 80 MeV32S and 220 MeV58Ni beams and the precessions of the 2 +1 →0 +1 γ-ray angular distributions in both nuclides were measured simultaneously. The results of these studies are compared with recently reported similar studies in which ions of188Os and194Pt recoiled through thin polarized Fe foils. It is concluded that (i) the transient field acting on Pt in Fe is singularly anomalous, and (ii) the recent contention that the g-factors of the 2 +1 states in the event Pt isotopes may be substantially lower than had been reported in the literature cannot be sustained. This transient field discontinuity is examined in terms of possible molecular orbital electron vacancy sharing between Pt and Fe.
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References
R.R. Borchers, B. Herskind, J.D. Bronson, L. Grodzins, R. Kalish and D.E. Murnick, Phys. Rev. Lett. 20 (1968) 424.
G. van Middelkoop, Hyp. Int. 4 (1978) 238;
N. Benczer-Koller, M. Hass and J. Sak, in Annual Review of Nuclear and Particle Science, ed. J.D. Jackson, H.E. Grove and R.F. Schwitters (Annual Reviews, Inc., Palo Alto 1980) vol. 30, p. 53; and references cited in these review papers.
J.L. Eberhardt, R.E. Horstman, P.C. Zalm, H.A. Doubt and G. van Middelkoop, Hyp. Int. 3 (1977) 195.
K. Dybdal, J.S. Forster and N. Rud, Nucl. Instr. Meth. 170 (1980) 233.
G.J. Kumbartzki, K. Hagemeyer, W. Knauer, G. Krösing, R. Kuhnen, V. Mertens, K.H. Speidel, J. Gerber and W. Nagel, Hyp. Int. 7 (1979) 253.
N.K.B. Shu, D. Melnik, J.M. Brennan, W. Semmler and N. Benczer-Koller, Phys. Rev. C 21 (1980) 1828.
J.L. Gallant, P. Dmytrenko, O. Häusser, M.L. Swanson and C.V. Stager, Progress Report Chalk River Nuclear Laboratories, PR-P-126: 2. 7; AECL-7055 (1980) p. 15.
R. Kalish, N.K.B. Shu, N. Benczer-Koller, A. Holthuizen, A.J. Rutten, F.A. Becker and G. van Middelkoop, Hyp. Int. 8 (1980) 151; see also refs. [2] and [6].
O. Häusser, H.R. Andrews, N. Rud, D. Ward, P. Skensved, J. Keinonen, R. Nicole and P. Taras, Progress Report Chalk River Nuclear Laboratories, PR-P-126:2.8; AECL-7055 (1980) p. 17.
P.C. Zalm, A. Holthuizen, J.A.G. de Raedt and G. van Middelkoop, Hyp. Int. 5 (1978) 347.
G. van Middelkoop, J.A.G. de Raedt, A. Holthuizen, W.A. Sterrenberg and R. Kalish, Phys. Rev. Lett. 40 (1978) 24.
K. Dybdal, J.S. Forster and N. Rud, Phys. Rev. Lett. 43 (1979) 1711.
R. Levy, N. Tsoupas, N.K.B. Shu, A. López-García, W. Andrejtscheff and N. Benczer-Koller, Phys. Rev. C 25 (1982) 293.
Nuclear Structure Group, University of Melbourne (unpublished data).
J. de Raedt, J. Billows, A. Pakou and M.A. Grace, Hyp. Int. 9 (1981) 507.
A.E. Stuchbery, C.G., Ryan and H.H. Bolotin, Phys. Rev. C24 (1981) 1480.
Table of Isotopes, 7th edition ed. C.M. Lederer and V.S. Shirley (Wiley, New York, 1978), appendix VII.
O. Häusser, B. Haas, D. Ward and H.R. Andrews, Nucl. Phys. A 314 (1979) 161.
A.E. Stuchbery, Ph.D. thesis, University of Melbourne, 1982 (unpublished).
A.E. Stuchbery, C.G. Ryan, H. Ohnuma, G.B. Beard and H.H. Bolotin, Phys. Rev. C27, to be Published.
A.E. Stuchbery, C.G. Ryan, H.H. Bolotin, I. Morrison and S.H. Sie, Nucl. Phys. A365 (1981) 317.
K. Dybdal, J.L. Eberhardt and N. Rud, Phys. Rev. Lett. 42 (1979) 592.
K.H. Speidel, G.J. Kumbartzki, W. Knauer, G. Krösing, V. Mertens, P.N. Tandon, J. Gerber, R.M. Freeman and M.B. Goldberg, Phys. Lett. 76A (1980) 414.
J.A. Bearden and A.F. Burr, Rev. Mod. Phys. 39 (1967) 125; also reproduced in Handbook of Chemistry and Physics, 60th Edition 1979–1980, ed. R.C. West (CRC Press, Inc., Boca Raton, 1980) p. E-191.
J. Eichler, U. Willie, B. Fastrup and K. Taulbjerg, Phys. Rev. A14 (1976) 707.
J. Lindhard and A. Winther, Nucl. Phys. A 166 (1971) 413.
A.D. McLean and R.S. McLean, Atom. Nucl. Data Tables 26 (1981) 197.
J. Mitroy, private commun.
J.A.G. de Raedt, A. Holthuizen, A.J. Rutten, W.A. Sterrenberg and G. van Middelkoop, Hyp. Int. 7 (1980) 455.
J.D. Garcia, R.J. Fortner and T.M. Kavanagh, Rev. Mod. Phys. 45 (1973) 111.
P.H. Woerlee, R.J. Fortner and F.W. Saris, J. Phys. B14 (1981) 3173.
H.H. Bolotin, A.E. Stuchbery, I. Morrison, D.L. Kennedy, C.G. Ryan and S.H. Sie, Nucl. Phys. A370 (1981) 146.
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Stuchbery, A.E., Ryan, C.G. & Bolotin, H.H. Disparity between the transient hyperfine fields for Pt and Os in Fe; an electron vacancy sharing interpretation. Hyperfine Interact 13, 275–295 (1983). https://doi.org/10.1007/BF01027258
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DOI: https://doi.org/10.1007/BF01027258