Zobrazeno 1 - 10
of 22
pro vyhledávání: '"N. J. Upadhyay"'
Publikováno v:
Physical Review C. 105
It is common to study the strong decay of a heavy nucleus as a tunneling phenomenon where the $\alpha$ ($^4$He) or a light nuclear cluster tunnels through the Coulomb barrier formed by its interaction with the heavier daughter nucleus. The position a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6d123c466ed70f88f1d966690faf60fb
https://doi.org/10.1103/physrevc.105.034311
https://doi.org/10.1103/physrevc.105.034311
Publikováno v:
Physical Review C. 99
Different models for the nonlocal description of the nuclear interaction are compared through a study of their effects on the half-lives of radioactive nuclei decaying by the emission of alpha particles. The half-lives are evaluated by considering a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2874a7b77716305c7d445e0c353b8350
https://doi.org/10.1103/physrevc.99.024308
https://doi.org/10.1103/physrevc.99.024308
Autor:
A. Bhagwat, N. J. Upadhyay
Publikováno v:
Physical Review C. 98
Study of scattering process in the nonlocal interaction framework leads to an integro-differential equation. The purpose of the present work is to develop an efficient approach to solve this integro-differential equation with high degree of precision
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::073c57df117f6e119571b1a5bede4b2a
https://doi.org/10.1103/physrevc.98.024605
https://doi.org/10.1103/physrevc.98.024605
Autor:
Charlotte Elster, Jutta Escher, V. Eremenko, N. J. Upadhyay, Goran Arbanas, Filomena Nunes, L. Hlophe, Ian J. Thompson
Publikováno v:
Computer Physics Communications. 187:195-203
We present an algorithm to calculate non-relativistic partial-wave Coulomb functions in momentum space. The arguments are the Sommerfeld parameter η, the angular momentum l, the asymptotic momentum q and the 'running' momentum p, where both momenta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5c11825bba7931011f78da3489abc88e
https://doi.org/10.1016/j.cpc.2014.10.002
https://doi.org/10.1016/j.cpc.2014.10.002
Autor:
N J Upadhyay, B. K. Jain
Publikováno v:
Pramana. 83:749-759
The presence of a resonance close to the threshold strongly effects the dynamics of the interacting particles at low energies. Production of 12C, the element for life, in 4He burning in Sun is a classic example of such a situation. In intermediate en
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b8f09c4eeaaf19d79441a55b1e45ed7a
https://doi.org/10.1007/s12043-014-0868-5
https://doi.org/10.1007/s12043-014-0868-5
Publikováno v:
Journal of Physics G: Nuclear and Particle Physics. 45:015106
Nonlocality in the scattering potential leads to an integro-differential equation.In this equation nonlocality enters through an integral over the nonlocal potential kernel. The resulting Schroedinger equation is usually handled by approximating r,r'
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6bd178ee9502e9beb1f8a1c199fae2f8
https://doi.org/10.1088/1361-6471/aa9877
https://doi.org/10.1088/1361-6471/aa9877
Publikováno v:
Nuclear Physics A. 824:70-85
The p + Li 6 → η + Be 7 reaction has been investigated with an emphasis on the η meson and 7Be interaction in the final state. Considering the 6Li and 7Be nuclei to be α–d and α–3He clusters respectively, the reaction is modelled to proceed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::07e49b731c524d9fe2fc5354856b96a9
https://doi.org/10.1016/j.nuclphysa.2009.03.010
https://doi.org/10.1016/j.nuclphysa.2009.03.010
Publikováno v:
International Journal of Modern Physics E. 18:1383-1388
We present a calculation for $\eta$ production in the $p-^6Li$ fusion near threshold including the $\eta-^7Be$ final state interaction (FSI). We consider the $^6Li$ and $^7Be$ nuclei as $\alpha-d$ and $\alpha-^3He$ clusters respectively. The calculat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c1a99f4e9225fbd39328286da97044b8
https://doi.org/10.1142/s0218301309013609
https://doi.org/10.1142/s0218301309013609
Autor:
V. Eremenko, Goran Arbanas, Filomena Nunes, N. J. Upadhyay, Ch. Elster, Ian J. Thompson, L. Hlophe, Jutta Escher
Publikováno v:
Physical Review C. 90
Background: The repulsive Coulomb force poses severe challenges when solving the three-body problem for ($d,p$) reactions on intermediate mass and heavy nuclei. Recently, a new approach based on the Coulomb-distorted basis in momentum space was propo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70a69c2205403566d2108173936e18b5
https://doi.org/10.1103/physrevc.90.014615
https://doi.org/10.1103/physrevc.90.014615
Autor:
Catalin Matei, J. J. Kolata, S. T. Pittman, S. M. Brown, J. F. Shriner, A. Bey, Steven D. Pain, Kyle Schmitt, D. Matyas, Kelly Chipps, Filomena Nunes, K. I. Hahn, A. N. Villano, K. Y. Chae, R. L. Kozub, G. L. Wilson, I. Spassova, M. Matos, N. J. Upadhyay, D. W. Stracener, S. Ahn, Michael Scott Smith, Dan Shapira, D. W. Bardayan, Amy Roberts, J. C. Blackmon, Jolie Cizewski, J. F. Liang, Caroline D Nesaraja, K. L. Jones, Patrick O'Malley, Brian Moazen, W. A. Peters
The extraction of detailed nuclear structure information from transfer reactions requires reliable, well-normalized data as well as optical potentials and a theoretical framework demonstrated to work well in the relevant mass and beam energy ranges.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::188c44e1f2b845a23f0efeb362cd7b57
http://arxiv.org/abs/1311.3205
http://arxiv.org/abs/1311.3205
