RIPL – Reference Input Parameter Library for Calculation of Nuclear Reactions and Nuclear Data Evaluations

Global distribution of Pu isotopes and 237Np.

The isotopic signature of fallout plutonium in the North Pacific

Andreas Türler*,†,‡ and Valeria Pershina †Laboratory of Radiochemistry and Environmental Chemistry, Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, CH-3012 Bern, Switzerland ‡Laboratory of Radiochemistry and Environmental Chemistry, Department Biology and Chemistry, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstrasse 1, D-64291 Darmstadt, Germany

Advances in the Production and Chemistry of the Heaviest Elements

Measurement of 240Pu/239Pu isotopic ratios in soils from the Marshall Islands using ICP-MS.

The November 1, 1952 thermonuclear explosion ("Mike") produced all of the uranium isotopes ${\mathrm{U}}^{239}$, ${\mathrm{U}}^{240}$,...${\mathrm{U}}^{255}$ through multiple neutron capture by ${\mathrm{U}}^{238}$. The long-lived products of successive ${\ensuremath{\beta}}^{\ensuremath{-}}$ decays from these isotopes were measured mass spectrometrically and radiometrically. The logarithms of the abundances decline smoothly with increasing mass number; the even-mass abundances slightly exceed the geometric mean of adjacent odd-mass abundances. Some nuclear properties of neutron-rich heavy nuclides, not subject to ordinary investigation are inferred.

Heavy Isotope Abundances in Mike Thermonuclear Device

Author(s): Ghiorso, A.; Thompson, S.G.; Higgins, G.H.; Seaborg, G.T.; Studier, M.H.; Fields, P.R.; Fried, S.M.; Diamond, H.; Mech, J.F.; Pyle, G.L.; Huizenga, J.R.; Hirsch, A.; Manning, W.M.; Browne, C.I.; Smith, H.L.; Spence, R.W.

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New Elements Einsteinium and Fermium, Atomic Numbers 99 and 100

UNIVERSITY OF CALIFORNIA TWO-WEEK LOAN COPY I I This is a Library Circulating Copy which may be borrowed for two weeks. For a personal retention copy, call Tech. Info. Diuision, Ext. 5545 BERKELEY, C A L I F O R N I A

H.L. Smith

Papers

Heavy Isotope Abundances in Mike Thermonuclear Device

New Elements Einsteinium and Fermium, Atomic Numbers 99 and 100

The New Elements Einsteinium and Fermium, Atomic Numbers 99 and 100

Collected radiochemical procedures

The decay chain Pu245Am245Cm245