Shell structure, emerging collectivity, and valence p-n interactions

Quadrupole Collectivity in 32 , 34 , 36 , 38 Si and the N 5 20 Shell Closure

R. W. Ibbotson,1 T. Glasmacher,1,2 B. A. Brown,1,2 L. Chen,1,2 M. J. Chromik,1,* P. D. Cottle,3 M. Fauerbach,1,2,† K. W. Kemper,3 D. J. Morrissey,1,4 H. Scheit,1,2 and M. Thoennessen1,2 1National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824 2Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824 3Department o...

J un 2 00 4 Generalization of the N p N n Scheme and the Structure of the Valence Space

The N p N n scheme, which has been extensively applied to even-even nuclei, is found to be a very good benchmark for odd-even, even-odd, and doubly-odd nuclei as well. There are no apparent shifts in the correlations for these four classes of nuclei. The compact correlations highlight the deviant behavior of the Z=78 nuclei, are used to deduce effective valence proton numbers near Z=64, and to ...

Shell structure at N = 28 near the dripline : spectroscopy of 42 Si , 43 P and 44

Measurements of the N = 28 isotones 42Si, 43P and 44S using oneand two-proton knockout reactions from the radioactive beam nuclei 44S and 46Ar are reported. The knockout reaction cross sections for populating 42Si and 43P and a 184 keV γ-ray observed in 43P establish that the d3/2 and s1/2 proton orbits are nearly degenerate in these nuclei and that there is a substantial Z = 14 subshell closur...

Axially connected nanowire core-shell p-n junctions: a composite structure for high-efficiency solar cells

A composite nanostructure for high-efficiency solar cells that axially connects nanowire core-shell p-n junctions is proposed. By axially connecting the p-n junctions in one nanowire, the solar spectrum is separated and absorbed in the top and bottom cells with respect to the wavelength. The unique structure of nanowire p-n junctions enables substantial light absorption along the nanowire and e...

Studies of valence shell photoionization of Cl2