Results 261 to 270 of about 3,975,342 (333)
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Physical Review C, 1983
Using sum rules we calculate four energy weighted moments for the $^{4}\mathrm{He}$ electric dipole photoeffect for a Volkov spin-independent potential with Serber exchange. Our results are ${\ensuremath{\sigma}}_{\ensuremath{-}1}=2.83$ mb, ${\ensuremath{\sigma}}_{0}=119$ MeV mb, ${\ensuremath{\sigma}}_{1}=5430$ Me${\mathrm{V}}^{2}$ mb, and ...
I. Elminyawi, J. S. Levinger
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Using sum rules we calculate four energy weighted moments for the $^{4}\mathrm{He}$ electric dipole photoeffect for a Volkov spin-independent potential with Serber exchange. Our results are ${\ensuremath{\sigma}}_{\ensuremath{-}1}=2.83$ mb, ${\ensuremath{\sigma}}_{0}=119$ MeV mb, ${\ensuremath{\sigma}}_{1}=5430$ Me${\mathrm{V}}^{2}$ mb, and ...
I. Elminyawi, J. S. Levinger
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Interaction of Alpha-Particles
Physical Review, 1941The properties of the forces between alpha-particles are discussed on the basis of a Heitler-London analysis augmented by a "van der Waals" calculation. The results are in some respects unfavorable to the alpha-particle model of the nucleus inasmuch as they contradict the assumptions often made when this model is applied.
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Why bother with alpha particles?
European Journal of Nuclear Medicine and Molecular Imaging, 2021A. P. King +2 more
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Patient-Specific Alpha-Particle Dosimetry
Current Radiopharmaceuticalse, 2011Alpha-particle therapy has received increased attention during the last few years because of the development of new targeting constructs and new labeling techniques and the availability of suitable α-particle - emitting radionuclides. This work provides an overview of methods that have been used in clinical trials in estimating the absorbed dose to ...
Stig, Palm +2 more
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Track Nanodosimetry of an Alpha Particle
Radiation Protection Dosimetry, 2002Experimental measurements and calculations are described of ionisation distributions in propane wall-less gas cavities of about 20 nm simulated size, performed at different distances from a 244Cm alpha particle track. Ionisation events are detected one by one by collecting electrons from the sensitive volume and by separating them with a drift column ...
DE NARDO, LAURA +6 more
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Physical Review, 1964
S>A phase-ehift analysis of the elastic p-t cross section in the energy range 0.1 to 0.76 Mev was made. It is shown that the low peak observed at 0.3 Mev is consistent with a 0/sup plus or minus / resonance at 0.5 plus or minus 0.1 Mev. The shape of the observed cusp in the p-t elastic cross section at the threshold energy of the n-He/sup 3/ channel is
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S>A phase-ehift analysis of the elastic p-t cross section in the energy range 0.1 to 0.76 Mev was made. It is shown that the low peak observed at 0.3 Mev is consistent with a 0/sup plus or minus / resonance at 0.5 plus or minus 0.1 Mev. The shape of the observed cusp in the p-t elastic cross section at the threshold energy of the n-He/sup 3/ channel is
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Few-Body Systems, 2012
We present a formalism describing the bound state of a large number of bosons and apply it to study nuclei consisting of A α particles. The method has its roots in a few-body approach and is based on the expansion of the many-body Faddeev components in Potential Harmonics, and the subsequent reduction of the Faddeev equation into a two-variable ...
S. A. Sofianos +3 more
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We present a formalism describing the bound state of a large number of bosons and apply it to study nuclei consisting of A α particles. The method has its roots in a few-body approach and is based on the expansion of the many-body Faddeev components in Potential Harmonics, and the subsequent reduction of the Faddeev equation into a two-variable ...
S. A. Sofianos +3 more
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Simple alpha particle detector
American Journal of Physics, 1985An alpha detector that can be used in a lecture hall is described. The device is a spark counter consisting of a length of 4−mil wire. (AIP)
A. G. Klein, M. J. Caspar, A. Nicola
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Acta Physica Hungarica A) Heavy Ion Physics, 1995
Recent work using the concept of alpha-clustering in studies of nuclear structure and nuclear reactions is reviewed. The high symmetry and binding energy of the alpha-particle makes it likely that nucleons inside the nucleus can condense into alpha particles and live long enough to affect many properties of nuclei and also the cross-sections of nuclear
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Recent work using the concept of alpha-clustering in studies of nuclear structure and nuclear reactions is reviewed. The high symmetry and binding energy of the alpha-particle makes it likely that nucleons inside the nucleus can condense into alpha particles and live long enough to affect many properties of nuclei and also the cross-sections of nuclear
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