49 citations · 227 across the 14 of their papers we have counts for
14 papers
Systematic local simulations of fast neutrino flavor conversions with scattering effects
Milad Delfan Azari, Hirokazu Sasaki, Tomoya Takiwaki +1
We investigate the dynamics of fast neutrino flavor conversions (FFCs) in the one-dimensional (1D) and zero-dimensional (0D) models, in which spatial advection is considered and ig…
Spin-flavor precession of Dirac neutrinos in dense matter and its potential in core-collapse supernovae
Hirokazu Sasaki, Tomoya Takiwaki, A. Baha Balantekin
We calculate the spin-flavor precession (SFP) of Dirac neutrinos induced by strong magnetic fields and finite neutrino magnetic moments in dense matter. As found in the case of Maj…
Effects of Hoyle state de-excitation on -process nucleosynthesis and Galactic chemical evolution
Hirokazu Sasaki, Yuta Yamazaki, Toshitaka Kajino +1
The partcle-induced hadronic de-excitation of the Hoyle state in C induced by inelastic scattering in a hot and dense plasma can enhance the triple-alpha reaction rate. This…
Consideration of memory of spin and parity in the fissioning compound nucleus by applying the Hauser-Feshbach fission fragment decay model to photonuclear reactions
Toshihiko Kawano, Amy E. Lovell, Shin Okumura +3
Prompt and -delayed fission observables, such as the average number of prompt and delayed neutrons, the independent and cumulative fission product yields, and the prompt -ray…
QRPA calculations for M1 transitions with the noniterative finite amplitude method and the application to neutron radiative capture cross sections
Hirokazu Sasaki, Toshihiko Kawano, Ionel Stetcu
We derive the equations of quasiparticle random-phase approximation (QRPA) based on the finite amplitude method (FAM) with the Hartree-Fock+BCS (HF+BCS) single-particle states, and…
Nuclear data activities for medium mass and heavy nuclei at Los Alamos
M. R. Mumpower, T. M Sprouse, T. Kawano +7
Nuclear data is critical for many modern applications from stockpile stewardship to cutting edge scientific research. Central to these pursuits is a robust pipeline for nuclear mod…
Comprehensive Analyses of the Neutrino-Process in the Core-collapsing Supernova
Heamin Ko, Dukjae Jang, Myung-Ki Cheoun +8
We investigate the neutrino flavor change effects due to neutrino self-interaction, shock wave propagation as well as matter effect on the neutrino-process of the core-collapsing s…
Non-iterative finite amplitude methods for E1 and M1 giant resonances
Hirokazu Sasaki, Toshihiko Kawano, Ionel Stetcu
The finite amplitude method (FAM) is a very efficient approach for solving the fully self-consistent random-phase approximation (RPA) equations. We use FAM to rederive the RPA matr…
Dynamics of fast neutrino flavor conversions with scattering effects: a detailed analysis
Hirokazu Sasaki, Tomoya Takiwaki
We calculate fast conversions of two flavor neutrinos by considering Boltzmann collisions of neutrino scatterings. In an idealized angular distribution of neutrinos with electron-l…
Neutrino-antineutrino oscillations induced by strong magnetic fields in dense matter
Hirokazu Sasaki, Tomoya Takiwaki
We simulate neutrino-antineutrino oscillations caused by strong magnetic fields in dense matter. With the strong magnetic fields and large neutrino magnetic moments, Majorana neutr…
Impact of hypernova νp-process nucleosynthesis on the galactic chemical evolution of Mo and Ru
Hirokazu Sasaki, Yuta Yamazaki, Toshitaka Kajino +5
We calculate Galactic Chemical Evolution (GCE) of Mo and Ru by taking into account the contribution from -process nucleosynthesis. We estimate yields of -nuclei such as $^{9…
Detectability of Collective Neutrino Oscillation Signatures in the Supernova Explosion of a 8.8 star
Hirokazu Sasaki, Tomoya Takiwaki, Shio Kawagoe +2
In order to investigate the impact of collective neutrino oscillations (CNO) on the neutrino signal from a nearby supernova, we perform 3-flavor neutrino oscillation simulations em…
Neutrino self-interaction and MSW effects on the supernova neutrino-process
Heamin Ko, Myung-Ki Cheoun, Eunja Ha +13
We calculate the abundances of Li, B, Nb, Tc, La, and Ta produced by neutrino induced reactions in a core-collapse supernova explos…
Possible effects of collective neutrino oscillations in the three flavor multi-angle simulations on supernova process
H. Sasaki, T. Kajino, T. Takiwaki +3
We study the effects of collective neutrino oscillations on process nucleosynthesis in proton-rich neutrino-driven winds by including both the multi-angle flavor mi…