Zobrazeno 1 - 10
of 24
pro vyhledávání: '"B W, Downs"'
Publikováno v:
International journal of clinical pharmacology research. 22(3-4)
Arthritis afflicts approximately 43 million Americans or approximately 16.6% of the US population. The two most common and best known types of arthritis are osteoarthritis (OA) and rheumatoid arthritis (RA). A significant amount of scientific researc
Autor:
B. W. Downs, Budh Ram
Publikováno v:
American Journal of Physics. 46:164-168
The treatment of hard‐core potentials in quantum mechanics is described. Known techniques and results are collected and discussed here so that they may be readily available. Two‐body bound‐state and scattering problems are considered in some de
Autor:
B. W. Downs
Publikováno v:
American Journal of Physics. 30:248-255
Elastic scattering by a spherically symmetric potential is discussed in terms of a partial-wave analysis in which the phase shifts do not appear explicitly. The resonance structure of the scattering amplitude is more evident in this analysis than it
Autor:
R. J. N. Phillips, B. W. Downs
Publikováno v:
Il Nuovo Cimento A Series 10. 41:374-379
A phenomenological, charge-symmetry-breaking (CSB) Λ-\(\Lambda - \mathcal{N}\) potential is deduced from the\(^4 He_\Lambda - ^4 H_\Lambda \) binding-energy difference. This is added to charge-symmetric (CS) potentials deduced from\(^3 H_\Lambda \)
Autor:
B. W. Downs
Publikováno v:
Il Nuovo Cimento A Series 10. 43:454-467
Electromagnetic mixing of isotopic-spin eigenstates leads to important charge-symmetry-breaking (CSB) elements in the\(u_1 (r, \alpha ) \simeq r^2 e^{ - \alpha r} \) interaction. The most important mixing is that for Σ0-Λ, which allows coupling of
Publikováno v:
Physical Review. 129:2730-2738
The variation method was used to set upper bounds on the strength of the average $\ensuremath{\Lambda}$-nucleon potential in the hypertriton ($_{\ensuremath{\Lambda}}\mathrm{H}^{3}$) required to reproduce the observed binding energy of that system fo
Autor:
R. E. Schenter, B. W. Downs
Publikováno v:
Physical Review. 133:B522-B528
A derivation of the optical potential for elastic scattering of high- energy nucleons by heavy nuclei is given under the multiple-scattering and impulse approximations. The momenta of the target nucleons and the dependence of the nucleon-nucleon scat
Autor:
B. W. Downs, D. R. Smith
Publikováno v:
Physical Review. 133:B461-B465
Upper bounds on the strength of the average lambdanucleon interaction required to account for the observed binding of the hypertriton have been established in a variation calculation with a ten-parameter trial function. Central two-body potentials ha
Autor:
M. E. Grypeos, B. W. Downs
Publikováno v:
Il Nuovo Cimento B Series 10. 44:306-314
This paper reports the results of a variational calculation of the binding energyD of a Λ in nuclear matter, based on an extension of the Jastrow method for nuclear binding energies. For direct two-body Λ-N interactions, these results are in approx
Publikováno v:
Il Nuovo Cimento. 35:852-859
The depth of the imaginary part of the optical potential in nuclear matter is calculated for incident Λ particles having laboratory energies less than 80 MeV with an assumed real well 35 MeV deep. This imaginary depth exceeds that for incident neutr