Temat: 21 - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Formation of Deeply Bound Pionic Atoms and Pion Properties in Nuclei
Autorzy:: Ikeno, N.
Yamagata-Sekihara, J.
Nagahiro, H.
Hirenzaki, S.
Powiązania:: https://bibliotekanauki.pl/articles/1402645.pdf
Data publikacji:: 2015-05
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 21.85.+d
21.65.-f
21.65.Jk
Opis:: We study theoretically the formation of deeply bound pionic atoms to deduce the pion properties in nuclei precisely from the observables. We show the theoretical formation spectra of deeply bound pionic atoms in the various cases. We consider the pionic atom formation on the even-even and neutron-odd nucleus targets. We also show the angular dependence of the formation spectra in the (d, $\text{}^3He$) reactions. Based on these theoretical results, we have found that we can obtain the systematic information on several deeply bound states for various nuclei. Actually, these observations have been performed in the experiments at RIBF/RIKEN.
Źródło:: Acta Physica Polonica A; 2015, 127, 5; 1568-1570
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Dependence of the odd-odd nucleus ¹⁹⁶Au level density on the parameters in interacting boson-fermion-fermion model (IBFFM)
Autorzy:: Kabashi, S.
Bekteshi, S.
Ahmetaj, S.
Saramati, B.
Veliu, V.
Powiązania:: https://bibliotekanauki.pl/articles/1070455.pdf
Data publikacji:: 2016-07
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 21.10.-k
21.10.Ma
21.60.-n
21.60.Fw
Opis:: The odd-odd nuclei are characterized by a level density which is high already in the low-energy region. This case displays a full complexity of the interwoven shell-model and collective degrees of freedom and thus provides an interesting testing ground for the pattern of nuclear level density. The level density of the odd-odd nucleus ¹⁹⁶Au is investigated in the interacting boson-fermion-fermion model which accounts for collectivity and complex interaction between quasiparticle and collective modes. In the present work, the IBFFM pattern of total and parametric dependent level densities is investigated and compared to the pattern found in previous investigations in the framework of combinatorial, thermodynamic and spectral distribution approaches.
Źródło:: Acta Physica Polonica A; 2016, 130, 1; 122-125
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: The Two-Nucleon and Three-Nucleon System in Three Dimensions
Autorzy:: Topolnicki, K.
Golak, J.
Witała, H.
Skibiński, R.
Elmeshneb, A.
Powiązania:: https://bibliotekanauki.pl/articles/1402632.pdf
Data publikacji:: 2015-05
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 25.10.+s
21.45.-v
21.45.Bc
21.45.Ff
Opis:: We present a brief overview of the three-dimensional formalism that is under development in our group. Using the 3D momentum eigenstates of the nucleon directly, instead of relying on the partial wave decomposition of operators involved in the calculations, allows us to use a very direct approach. This in turn enabled us to successfully tackle a large variety of few-body problems. Our calculation of the two nucleon transition operator and bound state can incorporate a very general form of the two-nucleon potential. Calculations of the three-nucleon bound state can include in addition to the two-nucleon potential also a very general operator form of the three-nucleon force. Recently the 3D formalism is also applied to processes that involve electro-weak probes. Carrying out these calculations for a wide spectrum of two-nucleon and three-nucleon potentials using the classical partial wave approach is unpractical due to the complicated spin structure of the operators. Using the 3D formalism, the calculations can be quickly adapted to test new models.
Źródło:: Acta Physica Polonica A; 2015, 127, 5; 1527-1528
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki