Absolute levels of total-body calcium can be determined by exposing a subject to a uniform neutron depth flux from 14-MeV neutrons produced by the 3H(d, n)4He reaction. The induced 49Ca can be measured with a whole-body counter with an invariant response to geometry and attenuation. This ...
Simple formulae for optical potentials are given as a function of energy and mass number from which neutron cross-sections can be calculated from 1 to 15 MeV for medium and heavy nuclei.doi:10.1016/0029-5582(64)90184-1D. WilmoreP.E. Hodgson...
COHN SH, DOMBROWSKI CS, FAIRCHILDRG: In vivo neutron activation analysis of calcium in man. Int J Appi RadiA¢t31: 127-137, 1970Cohn, S. H., Dombrowski, C. S., Fairchild, R. G. ( Brookhaven National Lab., Upton, N. Y. ): In-vivo neutron activation analysis of calcium in ...
radius of the 1f(,7/2) orbital. The combined data indicate that the. radius varies with nucleon number roughly as A('.1(+OR -).1). While the. result is consistent with no change in the radius, the theoretical. uncertainties in inferring rms radii from existing transfer reaction. data ...
We present theoretical predictions for electron scattering on oxygen and calcium isotopic chains. The calculations are done within the framework of the distorted-wave Born approximation and the proton and neutron density distributions are evaluated adopting a relativistic Dirac-Hartree model. We present re...
Twitter Google Share on Facebook neutron spectrometer [′nü‚trän spek′träm·əd·ər] (nucleonics) An instrument used to determine the energies of neutrons and the relative intensities of neutrons of different energies in a neutron beam. ...
A neutron moderator slows down the neutrons and thus makes them more likely to activate the calcium in the bones. FromProject Gutenberg Advertisement add this widget to your site Did You Know? Tuxedo was given its name after gaining popularity among diners at Tuxedo Park, NY. ...
To look for the most neutron-rich isotopes of these elements, the team fired a high-energy beam of calcium-48 ions at a beryllium target. The calcium nuclei undergo fragmentation to create smaller nuclei, which were studied by the team. This was done using BigRIPS, which sorts nuclei accord...
Nature Reviews Methods Primers volume 1, Article number: 70 (2021) Cite this article 7103 Accesses 120 Citations 36 Altmetric Metrics details Abstract Small-angle scattering (SAS) is a technique that is able to probe the structural organization of matter and quantify its response to changes ...
(Thomas et al., 1997). Vesta also has a large number of equatorial troughs (Buczkowski et al., 2012), which have characteristics consistent with graben (a depressed part of the crust bounded by faults). The visual geometric albedo of Vesta varies from 0.10 to 0.67 (Reddy et al., 2012...