Observation of Low- and High-Energy Gamow-Teller Phonon Excitations in Nuclei

Articolo
Data di Pubblicazione:
2014
Citazione:
Observation of Low- and High-Energy Gamow-Teller Phonon Excitations in Nuclei / Y. Fujita, H. Fujita, T. Adachi, C.L. Bai, A. Algora, G.P.A. Berg, P. Brentano, G. Colo, M. Csatlos, J.M. Deaven, E. Estevez Aguado, C. Fransen, D. De Frenne, K. Fujita, E. Ganioglu, C.J. Guess, J. Gulyas, K. Hatanaka, K. Hirota, M. Honma, D. Ishikawa, E. Jacobs, A. Krasznahorkay, H. Matsubara, K. Matsuyanagi, R. Meharchand, F. Molina, K. Muto, K. Nakanishi, A. Negret, H. Okamura, H.J. Ong, T. Otsuka, N. Pietralla, G. Perdikakis, L. Popescu, B. Rubio, H. Sagawa, P. Sarriguren, C. Scholl, Y. Shimbara, Y. Shimizu, G. Susoy, T. Suzuki, Y. Tameshige, A. Tamii, J.H. Thies, M. Uchida, T. Wakasa, M. Yosoi, R.G.T. Zegers, K.O. Zell, J. Zenihiro. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 112:11(2014). [10.1103/PhysRevLett.112.112502]
Abstract:
Gamow-Teller (GT) transitions in atomic nuclei are sensitive to both nuclear shell structure and effective residual interactions. The nuclear GT excitations were studied for the mass number A = 42, 46, 50, and 54 "f-shell" nuclei in (He-3, t) charge-exchange reactions. In the Ca-42 -> Sc-42 reaction, most of the GT strength is concentrated in the lowest excited state at 0.6 MeV, suggesting the existence of a low-energy GT phonon excitation. As A increases, a high-energy GT phonon excitation develops in the 6-11 MeV region. In the Fe-54 -> Co-54 reaction, the high-energy GT phonon excitation mainly carries the GT strength. The existence of these two GT phonon excitations are attributed to the 2 fermionic degrees of freedom in nuclei.
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
Y. Fujita, H. Fujita, T. Adachi, C.L. Bai, A. Algora, G.P.A. Berg, P. Brentano, G. Colo, M. Csatlos, J.M. Deaven, E. Estevez Aguado, C. Fransen, D. De Frenne, K. Fujita, E. Ganioglu, C.J. Guess, J. Gulyas, K. Hatanaka, K. Hirota, M. Honma, D. Ishikawa, E. Jacobs, A. Krasznahorkay, H. Matsubara, K. Matsuyanagi, R. Meharchand, F. Molina, K. Muto, K. Nakanishi, A. Negret, H. Okamura, H.J. Ong, T. Otsuka, N. Pietralla, G. Perdikakis, L. Popescu, B. Rubio, H. Sagawa, P. Sarriguren, C. Scholl, Y. Shimbara, Y. Shimizu, G. Susoy, T. Suzuki, Y. Tameshige, A. Tamii, J.H. Thies, M. Uchida, T. Wakasa, M. Yosoi, R.G.T. Zegers, K.O. Zell, J. Zenihiro
Autori di Ateneo:
COLO' GIANLUCA ( autore )
Link alla scheda completa:
https://air.unimi.it/handle/2434/360850
Link al Full Text:

Aree Di Ricerca

Settori


Settore FIS/04 - Fisica Nucleare e Subnucleare