600 PB 208 ROOT ADAPTATION TO COMPETITION

Direct Photon Production in 158 A GeV 208 Pb + 208 Pb Collisions

Octupole Transitions in the 208 Pb Region Octupole Transitions in the Pb Region

The Pb region is characterised by the existence of collective octupole states. Here we populated such states in Pb + Pb deep-inelastic reactions. γ-ray angular distribution measurements were used to infer the octupole character of several E3 transitions. The octupole character of the 2318 keV 17− → 14 in Pb, 2485 keV 19/2− → 13/2 in Pb, 2419 keV 15/2− → 9/2 in Pb and 2465 keV 17/2 → 11/2− in Tl...

Fusion enhancement in the 38 S + 208 Pb reaction

W. Loveland, D. Peterson, A. M. Vinodkumar, P.H.Sprunger , D. Shapira, J. F. Liang, G.A. Souliotis ,D.J. Morrissey , and P. Lofy 5 Dept. of Chemistry, Oregon State University, Corvallis, OR,97331. Physics Division, Argonne National Laboratory, Argonne, Il 60439 Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN and National Superconducting Cyclotron Laboratory, Michigan State Univer...

A measurement of ( n , xnγ ) cross sections for 208 Pb from threshold up to 20 MeV

Gamma production cross sections for neutron inelastic scattering, (n,2nγ ) and (n,3nγ ) reactions on 208Pb were measured at the Geel Electron Linear Accelerator (GELINA) from the respective thresholds up to at most 20 MeV. An unprecedented neutron energy resolution of 1.1 keV at 1 MeV (35 keV at 10 MeV) and a total uncertainty of about 5% was achieved for the integral gamma production cross sec...

Adaptation to Sperm Competition in Humans

With the recognition, afforded by recent evolutionary science, that female infidelity was a recurrent feature of modern humans’ evolutionary history has come the development of a unique area in the study of human mating: sperm competition. A form of male–male postcopulatory competition, sperm competition occurs when the sperm of two or more males concurrently occupy the reproductive tract of a ...