Nuclear Structure of Rhenium-186 Revealed by Neutron-Capture Gamma Rays

The total radiative thermal neutron-capture cross section of 185Re(n,gamma) was calculated from measurements of its gamma-ray spectrum following irradiation of a highly enriched 185Re target in the guided thermal-neutron beam at the Budapest Research Reactor. The cross section was obtained by first summing the experimentally measured partial gamma ray-production cross sections associated with the known ground-state transitions below 323 keV. Combined with the contribution to ground-state population from the quasi-continuum, which was generated by the DICEBOX statistical-decay code, the resulting thermal neutron-capture cross section was determined to be 84(6) b. This result is statistically comparable to previous works. Additionally, 12 levels and 54 primary transitions were newly identified in this work via the binding-energy test, thus improving the decay scheme. All observed primary transitions populating levels below 865 keV were used to perform an independent measurement of the neutron-separation energy, which was found to be 6179.45(30) keV. This result is also consistent with measurements made in previous works and with the adopted neutron-separation energy of 6179.7(7) keV

Evaluation of the Goddard range and range rate system at Rosman by intercomparison with GEOS 1 long-arc orbital solutions

Evaluation of Goddard range and range rate system at Rosman by intercomparison with GEOS 1 long-arc orbital solution

Gravity model comparison using Geos-1 long arc orbital solutions

Gravity model comparison using Geos-1 long arc orbital solution

A refined gravity model from Lageos (GEM-L2)

For abstract for A83-1354

GEOS I tracking station positions on the SAO standard earth /C-5/

GEOS 1 tracking station positions on SAO standard earth C-5 mode

Determination of some dominant parameters of the global dynamic sea surface topography from GEOS-3 altimetry

The 1977 altimetry data bank is analyzed for the geometrical shape of the sea surface expressed as surface spherical harmonics after referral to the higher reference model defined by GEM 9. The resulting determination is expressed as quasi-stationary dynamic SST. Solutions are obtained from different sets of long arcs in the GEOS-3 altimeter data bank as well as from sub-sets related to the September 1975 and March 1976 equinoxes assembled with a view to minimizing seasonal effects. The results are compared with equivalent parameters obtained from the hydrostatic analysis of sporadic temperature, pressure and salinity measurements of the oceans and the known major steady state current systems with comparable wavelengths. The most clearly defined parameter (the zonal harmonic of degree 2) is obtained with an uncertainty of + or - 6 cm. The preferred numerical value is smaller than the oceanographic value due to the effect of the correction for the permanent earth tide. Similar precision is achieved for the zonal harmonic of degree 3. The precision obtained for the fourth degree zonal harmonic reflects more closely the accuracy expected from the level of noise in the orbital solutions

Changes in Glenohumeral Kinematics after a Competitive Season in Collegiate Baseball Pitchers

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