Zobrazeno 1 - 10
of 14 888
pro vyhledávání: '"Nuclear mass"'
Due to the lack of experimental data on extremely neutron-rich nuclei, theoretical values derived from nuclear physics models are essential for the rapid neutron capture process ($r$-process). Metal-poor stars enriched by the $r$-process offer valuab
Externí odkaz:
http://arxiv.org/abs/2411.17076
Autor:
Nies, L., Atanasov, D., Athanasakis-Kaklamanakis, M., Au, M., Bernerd, C., Blaum, K., Chrysalidis, K., Fischer, P., Heinke, R., Klink, C., Lange, D., Lunney, D., Manea, V., Marsh, B. A., Müller, M., Mougeot, M., Naimi, S., Schweiger, Ch., Schweikhard, L., Wienholtz, F.
Mass measurements with the ISOLTRAP mass spectrometer at CERN-ISOLDE improve mass uncertainties of neutron-deficient tin isotopes towards doubly-magic $^{100}$Sn. The mass uncertainty of $^{103}$Sn was reduced by a factor of 4, and the new value for
Externí odkaz:
http://arxiv.org/abs/2410.17995
Autor:
Ma, Na-Na, Wang, Rong
Three-nucleon short-range correlation ($3N$ SRC) represents a rare and intriguing part of the nuclear dynamics at short distance, beyond the two-nucleon short-range correlation ($2N$ SRC). To search its existence is a hot topic in the ongoing and fut
Externí odkaz:
http://arxiv.org/abs/2407.01882
Autor:
Li, Jin, Yang, Hang
Taking into account nucleon-nucleon gravitational interaction, higher-order terms of symmetry energy, pairing interaction, and neural network corrections, a new BW4 mass model has been developed, which more accurately reflects the contributions of va
Externí odkaz:
http://arxiv.org/abs/2409.11930
Autor:
Wu, X. H., Zhao, P. W.
Publikováno v:
Sci. China Phys. Mech. Astron. 67, 272011 (2024)
The principal component analysis approach is employed to extract the principal components contained in nuclear mass models for the first time. The effects coming from different nuclear mass models are reintegrated and reorganized in the extracted pri
Externí odkaz:
http://arxiv.org/abs/2405.15487
A convolutional neural network (CNN) is employed to investigate nuclear mass. By introducing the masses of neighboring nuclei and the paring effects at the input layer of the network, local features of the target nucleus are extracted to predict its
Externí odkaz:
http://arxiv.org/abs/2404.14948
The anisotropic kernel ridge regression (AKRR) approach in nuclear mass predictions is developed by introducing the anisotropic kernel function into the kernel ridge regression (KRR) approach, without introducing new weight parameter or input in the
Externí odkaz:
http://arxiv.org/abs/2405.00356
Publikováno v:
Physical Review C 109, 024321 (2024)
The current investigation focuses on detailed analysis of the anchor based optimization approach (ABOA), its comparison with alternative global fitting protocols and on the global analysis of the truncation of basis effects in the calculation of bind
Externí odkaz:
http://arxiv.org/abs/2406.01896
Within the framework of the dinuclear system model, this study delves into the impact of various nuclear mass models on evaluating the fusion probability of superheavy nuclei. Nuclear mass models, as crucial inputs to the DNS model, exhibit slight va
Externí odkaz:
http://arxiv.org/abs/2402.15304
Publikováno v:
Phys. Rev. C 109, 064322 (2024)
The exploration of nuclear mass or binding energy, a fundamental property of atomic nuclei, remains at the forefront of nuclear physics research due to limitations in experimental studies and uncertainties in model calculations, particularly when mov
Externí odkaz:
http://arxiv.org/abs/2401.02824