Zobrazeno 1 - 10
of 163
pro vyhledávání: '"Helgesson, J."'
Publikováno v:
Eur.Phys.J.A30:81-108,2006
Dynamical and thermal characterizations of excited nuclear systems produced during the collisions between two heavy ions at intermediate incident energies are presented by means of a review of experimental and theoretical work performed in the last t
Externí odkaz:
http://arxiv.org/abs/nucl-ex/0609043
Autor:
Ghetti, R., Helgesson, J., Avdeichikov, V., Jakobsson, B., Colonna, N., Tagliente, G., Wilschut, H. W., Kravchuk, V. L.
Experimental kinetic energy distributions and small-angle two-particle correlation functions involving deuterons and tritons are compared for 36Ar+ 112,124Sn collisions at E/A = 61 MeV (i.e. for systems similar in size, but with different isospin con
Externí odkaz:
http://arxiv.org/abs/nucl-ex/0507029
Publikováno v:
Phys.Rev.Lett. 94 (2005) 202701
The effects of the finite size of a liquid drop undergoing a phase transition are described in terms of the complement, the largest (but still mesoscopic) drop representing the liquid in equilibrium with the vapor. Vapor cluster concentrations, press
Externí odkaz:
http://arxiv.org/abs/nucl-th/0412070
Autor:
Ghetti, R., Helgesson, J., Lanzano', G., De Filippo, E., Geraci, M., Aiello, S., Cavallaro, S., Pagano, A., Politi, G., Charvet, J. L., Dayras, R., Pollacco, E., Volant, C., Beck, C., Mahboub, D., Nouicer, R.
Two-particle correlation functions, involving protons, deuterons, tritons, and alpha-particles, have been measured at very forward angles (0.7 deg < theta_lab < 7 deg), in order to study projectile-like fragment (PLF) emission in E/A = 44 and 77 MeV
Externí odkaz:
http://arxiv.org/abs/nucl-ex/0412038
Autor:
Avdeichikov, V., Ghetti, R., Helgesson, J., Jakobsson, B., Golubev, P., Colonna, N., Wilschut, H. W.
Publikováno v:
Nucl.Phys. A736 (2004) 22-38
Single-particle kinetic energy spectra and two-particle small angle correlations of protons ($p$), deuterons ($d$) and tritons ($t$) have been measured simultaneously in 61A MeV $^{36}$Ar + $^{27}$Al, $^{112}$Sn and $^{124}$Sn collisions. Characteris
Externí odkaz:
http://arxiv.org/abs/nucl-ex/0401033
Autor:
Ghetti, R., Avdeichikov, V., Jakobsson, B., Golubev, P., Helgesson, J., Colonna, N., Tagliente, G., Wilschut, H. W., Kopecky, S., Kravchuk, V. L., Anderson, E. W., Nadel-Turonski, P., Westerberg, L., Bellini, V., Sperduto, M. L., Sutera, C.
Publikováno v:
Phys.Rev. C69 (2004) 031605
Small-angle, two-particle correlation functions have been measured for 36Ar+ 112,124Sn collisions at E/A = 61 MeV. Total momentum gated neutron-proton (np) and proton-proton (pp) correlations are stronger for the 124Sn-target. Some of the correlation
Externí odkaz:
http://arxiv.org/abs/nucl-ex/0310012
Autor:
Ghetti, R., Helgesson, J., Colonna, N., Jakobsson, B., Anzalone, A., Bellini, V., Carlen, L., Cavallaro, S., Celano, L., De Filippo, E., D'Erasmo, G., Di Santo, D., Fiore, E. M., Fokin, A., Geraci, M., Giustolisi, F., Kuznetsov, A., Lanzano', G., Mahboub, D., Marrone, S., Maartensson, J., Palomba, M., Pantaleo, A., Paticchio, V., Riera, G., Sperduto, M. L., Sutera, C., Tagliente, G., Urrata, M.
Publikováno v:
Phys.Rev.Lett. 87 (2001) 102701
Experimental information has been derived from the neutron-proton correlation function in order to deduce the time sequence of neutrons and protons emitted at 45 degrees in the E/A = 45 MeV 58Ni + 27Al reaction.
Comment: 4 pages, 4 figures. Phys
Comment: 4 pages, 4 figures. Phys
Externí odkaz:
http://arxiv.org/abs/nucl-ex/0108017
Autor:
Helgesson, J., Randrup, J.
Publikováno v:
Phys.Lett. B439 (1998) 243-250
Transport simulations including in-medium properties derived in a microscopic pi + nucleon-hole + delta-hole model in infinite nuclear matter are presented. In-medium pion dispersion relations, partial delta decay widths, pion absorption cross sectio
Externí odkaz:
http://arxiv.org/abs/nucl-th/9807060
Autor:
Helgesson, J., Randrup, J.
Publikováno v:
Phys.Lett. B411 (1997) 1-8
In-medium properties derived for nuclear matter in a microscopic pi + nucleon-hole + delta-hole model are incorporated into transport simulations of nuclear collisions by means of a local-density approximation and by utilizing a local medium frame. C
Externí odkaz:
http://arxiv.org/abs/nucl-th/9705022
Autor:
Helgesson, J., Randrup, J.
Publikováno v:
Nucl.Phys. A597 (1996) 672-700
Dispersion relations and amplitudes of collective pionic modes are derived in a pi + nucleon-hole + delta-hole model for use in transport descriptions by means of a local density approximation. It is discussed how pionic modes can be converted to rea
Externí odkaz:
http://arxiv.org/abs/nucl-th/9508036