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Description
The ground states of ${}^{13,14}$C, ${}^{13,14}$N, ${}^{14}$O nuclei were studied in two complementary few-body models. In first model the studied isotopes were considered as cluster nuclei with following configurations: ${}^{13}$C ($3\alpha + n$ ), ${}^{14}$C ($3\alpha + 2n$), ${}^{13}$N ($3\alpha + p$), ${}^{14}$N ($3\alpha + n + p$), ${}^{14}$O ($3\alpha + 2p$). In second model the studied isotopes were considered as systems consisting from nuclear core ${}^{12}$C and one or two valence nucleons. The wave functions and energies of these few-body systems were calculated by Feynman’s continual integrals method in Euclidean time [1–3]. The algorithm of parallel calculations was implemented in C++ programming language using NVIDIA CUDA technology [4]. Calculations were performed on the NVIDIA Tesla K40 accelerator installed within the heterogeneous cluster of the Laboratory of Information Technologies, Joint Institute for Nuclear Research, Dubna [5]. Results of the few-body model were compared with results of the shell model of deformed nuclei [6, 7].
References
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2. Shuryak E.V. and Zhirov O.V. // Nucl. Phys. B. 1984. V.242. P.393.
3. Samarin V.V. and Naumenko M.A. // Phys. Atom. Nucl. 2017. V.80. P.877.
4. Naumenko M.A. and Samarin V.V. // Supercomp. Front. Innov. 2016. V.3. P.80.
5. http://hybrilit.jinr.ru.
6. Samarin V.V. // Phys. Atom. Nucl. 2010. V.73. P. 1416.
7. Samarin V.V. // Phys. Atom. Nucl. 2015. V.78. P. 128.
