Journal ArticleDOI
Evidence for Two-Nucleon Polarization in the π(h9/2i13/2)11- ν(j-2)0+ Level in 208Po
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In this paper, in-beam gamma-ray spectroscopy measurements on the 208Pb(α, 4n)208Po reaction using the Stockholm 225-cm cyclotron have been used to conclude that there is an 11-, 8 ns isomeric state in 208Po, which lies 1 175 keV above the π(h 9/22)8+ state and that this isomersic state should have the configuration π (h9/2i13/2)11- ν(j-2)0+.Abstract:
From in-beam gamma-ray spectroscopy measurements on the 208Pb(α, 4n)208Po reaction using the Stockholm 225-cm cyclotron, we have concluded that there is an 11-, 8 ns isomeric state in 208Po, which lies 1 175 keV above the π(h9/22)8+ state and that this isomeric state should have the configuration π(h9/2i13/2)11- ν(j-2)0+. Calculations based on the use of empirical two-particle interactions give a position of the 11- level which deviates by about + 100 keV from the experimentally found position. It is suggested that this deviation is mainly due to the difference in the polarization of the 206Pb-and 208Pb-cores by the two aligned h9/2 and i13/2 protons.read more
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Journal ArticleDOI
Nuclear Data Sheets for A = 208
TL;DR: In this paper, detailed level schemes, decay schemes, and the experimental data on which they are based are presented for all nuclei with mass number A = 208, and inconsistencies and discrepancies are noted; and adopted values for level and γ-ray energies, γ intensities, as well as for other nuclear properties are given.
Journal ArticleDOI
Evidence for a Core-excited Isomeric 31/2- State in 209Po
TL;DR: Using alpha particles from the Stockholm 225-cm cyclotron, gamma rays from the 208Pb(α, 3n) reaction have been studied in this paper, which gives strong evidence for a 31/2-isomeric state in 20984Po125 with a half-life of 118 ± 3 ns.
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Evidence for two-particle core polarization in the isomeric 29/2 + and 21/2 - states of theπ ( {h_{{9 2}}^2 } )_{8^ + } i_{1 {3 2}} vleft( {j^{ - 2} } )_{0^ + } andπ ( {h_{{9 2}}^3 } )vleft( {j^{ - 2} } )_{0^ + } configurations in 209 At
Journal ArticleDOI
Excited states in 146Sm and 147Sm
J. Kownacki,Z. Sujkowski,E. Hammarén,E. Liukkonen,M. Piiparinen,Th. Lindblad,H. Ryde,Vladimir Paar +7 more
TL;DR: In this paper, the authors used the cluster-vibration model (CVM) as well as the shell model to investigate excited states in the isotopes 146Sm and 147Sm.
Journal ArticleDOI
On the yrast two proton-two neutron hole states in208Po
TL;DR: In this paper, high-spin levels in 208Po, populated in the 208Pb(α,4n)-reaction, were studied using α-particles in the energy region 41-51 MeV.
References
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Internal conversion tables part I: K-, L-, M-shell conversion coefficients for Z=30 to Z=103
R.S. Hager,E.C. Seltzer +1 more
TL;DR: In this article, the internal conversion coefficient, number of electrons per photon emitted in a nuclear transition, is presented from a new relativistic selfconsistent field calculation which takes into account finite nuclear size, hole and exchange effects, experimental electron binding energies, and vacuum polarization.
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Effective quadrupole charges in the lead region
TL;DR: In this paper, the authors surveyed the available experimental material on effective E2 charges in the lead region and found no evidence for a variation in the effective charge of the h 9 2. proton orbital as a function of the number of nucleons outside the core.
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Evidence for an Isomeric 29/2+ Level in 211At
TL;DR: A 70 ns isomeric state at 2 641 keV has been produced in the 209Bi(α,2n)211 At reaction and interpreted as the 29/2+ state of the h9/22 i13/2 proton configuration as discussed by the authors.
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On the (h92)3 proton configuration in 51211At126
TL;DR: In this article, the nucleus 85211At126 has been studied in the 209Bi(α, 2nnγ) reaction and in the EC decay of 211Rn.