Stellar s-process neutron capture cross section of Ce isotopes

Autor: Sahoo, R. N., Paul, M., Kashiv, Y., Tessler, M., Friedman, M., Halfon, S., Kreisel, A., Shor, A., Weissman, L.

Publikováno v: Phys. Rev. C 109, 025808 (2024)

Stellar abundances of cerium are of high current interest based both on observations and theoretical models, especially with regard to the neutron--magic $^{140}$Ce isotope. A large discrepancy of $s-$process stellar models relative to cerium abundan

Externí odkaz: http://arxiv.org/abs/2406.17646

Time-of-flight and activation experiments on 147Pm and 171Tm for astrophysics

Autor: Guerrero C., Lerendegui-Marco J., Domingo-Pardo C., Casanovas A., Dressler R., Halfon S., Heinitz S., Kivel N., Köster U., Paul M., Quesada-Molina J.M., Schumann D., Tarifeño-Saldivia A., Tessler M., Weissman L., Aberle O., Andrzejewski J., Audouin L., Bacak M., Balibrea J., Barbagallo M., Becvar F., Berthoumieux E., Billowes J., Bosnar D., Brown A., Caamaño M., Calviño F., Calviani M., Cano-Ott D., Cardella R., Cerutti F., Chen Y.H., Chiaveri E., Colonna N., Cortés G., Cortés-Giraldo M.A., Cosentino L., Damone L.A., Diakaki M., Dupont E., Durán I., Fernández-Domínguez B., Ferrari A., Ferreira P., Finocchiaro P., Göbel K., García A.R., Gawlik A., Gilardoni S., Glodariu T., Gonçalves I.F., González E., Griesmayer E., Gunsing F., Harada H., Heyse J., Jenkins D.G., Jericha E., Käppeler F., Kadi Y., Kalamara A., Kavrigin P., Kimura A., Kokkoris M., Krticka M., Kurtulgil D., Leal-Cidoncha E., Lederer C., Leeb H., Meo S. Lo, Lonsdale S.J., Macina D., Marganiec J., Martínez T., Masi A., Massimi C., Mastinu P., Mastromarco M., Maugeri E.A., Mazzone A., Mendoza E., Mengoni A., Milazzo P.M., Mingrone F., Musumarra A., Negret A., Nolte R., Oprea A., Patronis N., Pavlik A., Perkowski J., Porras I., Praena J., Radeck D., Rauscher T., Reifarth R., Rout P.C., Rubbia C., Ryan J.A., Sabaté-Gilarte M., Saxena A., Schillebeeckx P., Smith A.G., Sosnin N.V., Stamatopoulos A., Tagliente G., Tain J.L., Tassan-Got L., Tsinganis A., Valenta S., Vannini G., Variale V., Vaz P., Ventura A., Vlachoudis V., Vlastou R., Wallner A., Warren S., Weiss C., Woods P.J., Wright T., Žugec P.

Publikováno v: EPJ Web of Conferences, Vol 146, p 01007 (2017)

The neutron capture cross section of several key unstable isotopes acting as branching points in the s-process are crucial for stellar nucleosynthesis studies, but they are very challenging to measure due to the difficult production of sufficient sam

Externí odkaz: https://doaj.org/article/d379879de73141afb3b594b79a690a17

Stellar $^{36,38}$Ar$(n,\gamma)^{37,39}$Ar reactions and their effect on light neutron-rich nuclide synthesis

Autor: Tessler, M., Paul, M., Halfon, S., Meyer, B. S., Pardo, R., Purtschert, R., Rehm, K. E., Scott, R., Weigand, M., Weissman, L., Almaraz-Calderon, S., Avila, M. L., Baggenstos, D., Collon, P., Hazenshprung, N., Kashiv, Y., Kijel, D., Kreisel, A., Reifarth, R., Santiago-Gonzalez, D., Shor, A., Silverman, I., Talwar, R., Veltum, D., Vondrasek, R.

The $^{36}$Ar$(n,\gamma)^{37}$Ar ($t_{1/2}$ = 35 d) and $^{38}$Ar$(n,\gamma)^{39}$Ar (269 y) reactions were studied for the first time with a quasi-Maxwellian ($kT \sim 47$ keV) neutron flux for Maxwellian Average Cross Section (MACS) measurements at

Externí odkaz: http://arxiv.org/abs/1808.08556

Stellar 30-keV neutron capture in 94,96Zr and the 90Zr(gamma,n)89Zr photonuclear reaction with a high-power liquid-lithium target

Autor: Tessler, M., Paul, M., Arenshtam, A., Feinberg, G., Friedman, M., Halfon, S., Kijel, D., Weissman, L., Aviv, O., Berkovits, D., Eisen, Y., Eliyahu, I., Haquin, G., Kreisel, A., Mardor, I., Shimel, G., Shor, A., Silverman, I., Yungrais, Z.

Publikováno v: Phys. Lett. B 751 (2015) 418-422 This article is available under the terms of the Creative Commons Attribution License (CC BY)

A high-power Liquid-Lithium Target (LiLiT) was used for the first time for neutron production via the thick-target 7Li(p,n)7Be reaction and quantitative determination of neutron capture cross sections. Bombarded with a 1-2 mA proton beam at 1.92 MeV

Externí odkaz: http://arxiv.org/abs/1511.04701

In Beam Tests of Implanted Helium Targets

Autor: McDonald, J. E., France III, R. H., Jarvis, R. A., Ahmed, M. W., Blackston, M. A., Delbar, Th., Gai, M., Kading, T. J., Parpottas, Y., Perdue, B. A., Prior, R. M., Rubin, D. A., Spraker, M. C., Yeomans, J. D., Weissman, L., Weller, H. R., Wilds Jr, E. L., UHartford, GCSU, LNS/UConn, TUNL/Duke, UCL/LLN, Yale, NGCSU

Publikováno v: JINST 1:P09003,2006

Targets consisting of 3,4He implanted into thin aluminum foils (approximately 100, 200 or 600 ug/cm^2) were prepared using intense (a few uA) helium beams at low energy (approximately 20, 40 or 100 keV). Uniformity of the implantation was achieved by

Externí odkaz: http://arxiv.org/abs/nucl-ex/0608027