Zobrazeno 1 - 10
of 518
pro vyhledávání: '"Zegers R"'
Self-consistent microscopic calculations for electron captures on nuclei in core-collapse supernovae
Calculations for electron capture rates on nuclei with atomic numbers between $Z=20$ and $Z=52$ are performed in a self-consistent finite-temperature covariant energy density functional theory within the relativistic quasiparticle random-phase approx
Externí odkaz:
http://arxiv.org/abs/2412.00650
Autor:
Spieker, M., Bazin, D., Biswas, S., Cottle, P. D., Farris, P. J., Gade, A., Ginter, T., Giraud, S., Kemper, K. W., Li, J., Noji, S., Pereira, J., Riley, L. A., Smith, M. K., Weisshaar, D., Zegers, R. G. T.
Publikováno v:
Phys. Rev. C 109, 014307 (2024)
We report new experimental data for excited states of $^{72,74}$Se obtained from proton removal from $^{73,75}$Br secondary beams on a proton target. The experiments were performed with the Ursinus-NSCL Liquid Hydrogen Target and the combined GRETINA
Externí odkaz:
http://arxiv.org/abs/2411.09835
Autor:
Tsintari, P., Dimitrakopoulos, N., Garg, R., Hermansen, K., Marshall, C., Montes, F., Perdikakis, G., Schatz, H., Setoodehnia, K., Arora, H., Berg, G. P. A., Bhandari, R., Blackmon, J. C., Brune, C. R., Chipps, K. A., Couder, M., Deibel, C., Hood, A., Gamage, M. Horana, Jain, R., Maher, C., Miskovitch, S., Pereira, J., Ruland, T., Smith, M. S., Smith, M., Sultana, I., Tinson, C., Tsantiri, A., Villari, A., Wagner, L., Zegers, R. G. T.
The synthesis of heavy elements in supernovae is affected by low-energy (n,p) and (p,n) reactions on unstable nuclei, yet experimental data on such reaction rates are scarce. The SECAR (SEparator for CApture Reactions) recoil separator at FRIB (Facil
Externí odkaz:
http://arxiv.org/abs/2411.03338
Charge-exchange reactions are versatile probes for nuclear structure. In particular, when populating isobaric analog states, these reactions are used to study isovector nuclear densities and neutron skins. The quality of the information extracted fro
Externí odkaz:
http://arxiv.org/abs/2403.18629
Autor:
Tsantiri, A., Palmisano-Kyle, A., Spyrou, A., Mohr, P., Berg, H. C., DeYoung, P. A., Dombos, A. C., Gastis, P., Good, E. C., Harris, C. M., Liddick, S. N., Lyons, S. M., Olivas-Gomez, O., Owens-Fryar, G., Pereira, J., Richard, A. L., Simon, A., Smith, M. K., Zegers, R. G. T.
Publikováno v:
Phys. Rev. C 107, 035808 (2023)
The total cross section of the $^{82}$Kr(p,$\gamma$)$^{83}$Rb reaction was measured for the first time at effective center-of-mass energies between 2.4 and 3.0 MeV, within the relevant Gamow window for the astrophysical $\gamma$ process. The experime
Externí odkaz:
http://arxiv.org/abs/2305.14523
Autor:
Spieker, M., Agbemava, S. E., Bazin, D., Cottle, S. Biswas P. D., Farris, P. J., Gade, A., Ginter, T., Giraud, S., Kemper, K. W., Li, J., Nazarewicz, W., Noji, S., Pereira, J., Riley, L. A., Smith, M., Weisshaar, D., Zegers, R. G. T.
In the Ge-Sr mass region, isotopes with neutron number $N \leq 40$ are known to feature rapid shape changes with both nucleon number and angular momentum. To gain new insights into their structure, inelastic proton scattering experiments in inverse k
Externí odkaz:
http://arxiv.org/abs/2304.14246
Autor:
Spieker, M., Riley, L. A., Cottle, P. D., Kemper, K. W., Bazin, D., Biswas, S., Farris, P. J., Gade, A., Ginter, T., Giraud, S., Li, J., Noji, S., Pereira, J., Smith, M., Weisshaar, D., Zegers, R. G. T.
Publikováno v:
Physical Review C 106, 054305 (2022)
Enhanced octupole collectivity is expected in the neutron-deficient Ge, Se and Kr isotopes with neutron number $N \approx 40$ and has indeed been observed for $^{70,72}$Ge. Shape coexistence and configuration mixing are, however, a notorious challeng
Externí odkaz:
http://arxiv.org/abs/2211.12288
Autor:
Giraud, S., Zamora, J. C., Zegers, R. G. T., Ayyad, Y., Bazin, D., Mittig, W., Carls, A., DeNudt, M., Rahman, Z.
Charge-exchange $(d,{}^{2}\text{He})$ reactions in inverse kinematics at intermediate energies are a very promising method to investigate the Gamow-Teller transition strength in unstable nuclei. A simulation and analysis software based on the $\rm{\s
Externí odkaz:
http://arxiv.org/abs/2211.02551
Autor:
Giraud, S., Zamora, J. C., Zegers, R., Bazin, D., Ayyad, Y., Bacca, S., Beceiro-Novo, S., Brown, B. A., Carls, A., Chen, J., Cortesi, M., DeNudt, M., Hagen, G., Hultquist, C., Maher, C., Mittig, W., Ndayisabye, F., Noji, S., Novario, S. J., Pereira, J., Rahman, Z., Schmitt, J., Serikow, M., Sun, L. J., Surbrook, J., Watwood, N., Wheeler, T.
For the first time, the $(d,{}^2\text{He})$ reaction was successfully used in inverse kinematics to extract the Gamow-Teller transition strength in the $\beta^{+}$ direction from an unstable nucleus. The nucleus studied was $^{14}$O, and the Gamow-Te
Externí odkaz:
http://arxiv.org/abs/2210.15866
Autor:
Noji, S., Zegers, R. G. T., Berg, G. P. A., Amthor, A. M., Baumann, T., Bazin, D., Burkhardt, E. E., Cortesi, M., DeKamp, J. C., Hausmann, M., Portillo, M., Potterveld, D. H., Sherrill, B. M., Stolz, A., Tarasov, O. B., York, R. C.
Publikováno v:
Nucl. Instrum. Methods Phys. Res., Sect. A 1045 (2023) 167548
A High Rigidity Spectrometer (HRS) has been designed for experiments at the Facility for Rare-Isotope Beams (FRIB) at Michigan State University (MSU). The HRS will allow experiments to be performed with the most exotic neutron-rich isotopes at high b
Externí odkaz:
http://arxiv.org/abs/2207.05995