529 citations · 6.7k across the 154 of their papers we have counts for
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The nuclear shell model towards the drip lines
B. Alex Brown
Applications of configuration mixing methods for nuclei near the proton and neutron drip lines are discussed. A short review of magic numbers is presented. Prospects for advances i…
Finite-temperature electron-capture rates for neutron-rich nuclei around N=50 and effects on core-collapse supernovae simulations
S. Giraud, E. M. Ney, A. Ravlić +7
The temperature dependence of stellar electron-capture (EC) rates is investigated, with a focus on nuclei around , just above , which play an important role during the…
Hidden spin-isospin exchange symmetry
Dean Lee, Scott Bogner, B. Alex Brown +8
The strong interactions among nucleons have an approximate spin-isospin exchange symmetry that arises from the properties of quantum chromodynamics in the limit of many colors, $N_…
Constraints on Skyrme Equations of State from Doubly Magic Nuclei, Ab-Initio Calculations of Low-Density Neutron Matter, and Neutron Stars
C. Y. Tsang, B. A. Brown, F. J. Fattoyev +2
We use properties of doubly-magic nuclei, ab-initio calculations of low-density neutron matter, and of neutron stars to constrain the parameters of the Skyrme energy-density functi…
Low Energy Magnetic Radiation (LEMAR ) of Warm Nuclei
S. Frauendorf, B. A. Brown, R. Schwengner
The enhancement observed below 2 MeV in the radiative strength function of nuclei near closed shells is explained by shell model calculations as M1 transitions between excited stat…
Low energy magnetic radiation enhancement in the f shell
S. Karampagia, B. A. Brown, V. Zelevinsky
Studies of the -ray strength functions can reveal useful information concerning underlying nuclear structure. Accumulated experimental data on the strength functions show an enh…
Chaos and regularity in the doubly magic nucleus 208Pb
B. Dietz, A. Heusler, K. H. Maier +2
High resolution experiments have recently lead to a complete identification (energy, spin, and parity) of 151 nuclear levels up to an excitation Energy of Ex= 6.20 MeV in 208Pb. We…
Nuclear Matrix Elements for Tests of Local Lorentz Invariance Violation
B. A. Brown, G. F. Bertsch, L. M. Robledo +2
The nuclear matrix elements for the momentum quadrupole operator are important for the interpretation of precision atomic physics experiments that search for violations of local Lo…
Nuclear Structure Aspects of Neutrinoless Double Beta Decay
B. A. Brown, M. Horoi, R. A. Sen'kov
We decompose the neutrinoless double-beta decay matrix elements into sums of products over the intermediate nucleus with two less nucleons. We find that the sum is dominated by the…
Large low-energy strength for Fe within the nuclear shell model
B. Alex Brown, A. C. Larsen
A strong enhancement at low -ray energies has recently been discovered in the -ray strength function of Fe. In this work, we have for the first time obtained theore…
The role of excited states in rp-process for sd shell nuclei
J. Grineviciute, B. A. Brown, H. Schatz
We investigate the importance of proton capture on low-lying excited states that are thermally excited in hot stellar environments. In addition to the previously known case of $^{3…
Thermonuclear 42Ti(p,gamma)43V rate in type I X-ray bursts
J. J. He, A. Parikh, B. A. Brown +5
The thermonuclear rate of the Ti(,)V reaction has been reevaluated based on a recent precise proton separation energy measurement of (V)=8343 k…
Benchmarking nuclear models for Gamow-Teller response
E. Litvinova, B. A. Brown, D. -L. Fang +2
A comparative study of the nuclear Gamow-Teller response (GTR) within conceptually different state-of-the-art approaches is presented. Three nuclear microscopic models are consider…
Neutrinoless double- decay of Se in the shell model: beyond closure approximation
R. A. Sen'kov, M. Horoi, B. A. Brown
We recently proposed a new method to calculate the standard nuclear matrix elements for neutrinoless double- decay () of Ca going beyond the closure approximation…
Constraints on Skyrme Equations of State from Properties of Doubly Magic Nuclei and Ab-Initio Calculations of Low-Density Neutron Matter
B. Alex Brown, A. Schwenk
We use properties of doubly-magic nuclei and ab-initio calculations of low-density neutron matter to constrain Skyrme equations of state for neutron-rich conditions. All of these p…
The Nuclear Pairing Gap -- How Low Can It Go?
B. Alex Brown
The pairing gap for Ca obtained from new experimental data on the masses of Ca has the smallest value yet observed. This is explained in the framework of the nucle…
Nuclear shell structure and response toward the limits of mass, temperature and isospin
E. Litvinova, B. A. Brown, D. -L. Fang +4
We present a short overview of our recent theoretical developments aiming at the description of exotic nuclear phenomena to be reached and studied at the next-generation radioactiv…
Investigating -decay properties of spherical nuclei along the possible r-process path
Dong-Liang Fang, B. Alex Brown, Toshio Suzuki
The spherical QRPA method is used for the calculations of the -decay properties of the neutron-rich nuclei in the region near the neutron magic numbers N=82 and N=126 which are…
Novel shell-model analysis of the Xe double beta decay nuclear matrix elements
M. Horoi, B. A. Brown
Neutrinoless double beta decay, if observed, could distinguish whether neutrino is a Dirac or a Majorana particle, and it could be used to determine the absolute scale of the neutr…
Two-proton removal from S and the structure of Si
J. A. Tostevin, B. A. Brown, E. C. Simpson
Newly-published Si gamma-ray spectra and a final-state-inclusive Si production cross section value, obtained in a higher-statistics intermediate-energy two-proton rem…
Shape transitions in exotic Si and S isotopes and tensor-force-driven Jahn-Teller effect
Yutaka Utsuno, Takaharu Otsuka, B. Alex Brown +3
We show how shape transitions in the neutron-rich exotic Si and S isotopes occur in terms of shell-model calculations with a newly constructed Hamiltonian based on V_MU interaction…
Tensor-force-driven Jahn-Teller effect and shape transitions in exotic Si isotopes
Yutaka Utsuno, Takaharu Otsuka, B. Alex Brown +3
We show how the shape evolution of the neutron-rich exotic Si and S isotopes can be understood as a Jahn-Teller effect that comes in part from the tensor-driven evolution of single…
Quenching of spectroscopic factors for proton removal in oxygen isotopes
Ø. Jensen, G. Hagen, M. Hjorth-Jensen +2
We present microscopic coupled-cluster calculations of the spectroscopic factors for proton removal from the closed-shell oxygen isotopes O with the chiral nucle…
Effects of isospin mixing in the A=32 quintet
Angelo Signoracci, B. Alex Brown
For the A=32 T=2 quintet we provide a unified theoretical description for three related aspects of isospin mixing: the necessity of more than three terms in the isobaric mass multi…