References quoted in the ENSDF dataset: 55CA ADOPTED LEVELS, GAMMAS

36 references found.

Clicking on a keynumber will list datasets that reference the given article.

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1976DA02

Phys.Rev. C13, 887 (1976)

C.N.Davids

Mass-Excess Predictions for Neutron-Rich Isotopes Near Iron

NUCLEAR STRUCTURE ^{51,52,53,54,55,56,57,58}Ca, ^53,55,57,59Sc, ^{53,54,55,56,57,58,59,60}Ti, ^55,57,59,61V, ^{57,58,59,60,61,62}Cr, ^59,61,63Mn, ^61,62,63,64Fe, ⁶⁵Co, ⁶³Ga, ^64,65,67Ge; calculated mass excess.

doi: 10.1103/PhysRevC.13.887

1990SU06

Prog.Theor.Phys.(Kyoto) 83, 180 (1990)

Y.Suzuki, K.Ikeda, H.Sato

New Type of Dipole Vibration in Nuclei

NUCLEAR STRUCTURE ^{47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62}Ca; calculated pygmy dipole resonance, GDR relative energy, dipole strength ratio. ¹²⁸I, ¹³⁴Cs, ¹⁴²Pr, ¹⁶⁰Tb, ¹⁶⁶Ho, ¹⁷⁰Tm, ¹⁷⁶Lu, ¹⁸²Ta, ¹⁹⁸Au, ²⁰⁷Pb; calculated pygmy resonance energy, electric dipole strength. Hydrodynamic model.

1995RI05

Nucl.Phys. A586, 445 (1995); Erratum Nucl.Phys. A596, 716 (1996)

W.A.Richter, M.G.Van der Merwe, B.Brown

Shell-Model Calculations for Neutron-Rich Nuclei in the 0f1p Shell

NUCLEAR STRUCTURE ^{51,52,53,54,55,56,57,58,59,60}Ca, ^{52,53,54,55,56,57,58,59,60,61}Sc, ^{54,55,56,57,58,59,60,61,62}Ti, ^{59,60,61,62,63}V, ^{58,60,61,62,63,64}Cr, ^62,63,64,65Mn, ^63,64,65,66Fe; calculated binding energies, mass defects. ^51,50,52Ca, ^52,53Ti, ^51,52Sc; calculated levels. Shell model, empirical effective interaction.

doi: 10.1016/0375-9474(94)00802-T

1997BE70

Phys.Lett. 415B, 111 (1997)

M.Bernas, C.Engelmann, P.Armbruster, S.Czajkowski, F.Ameil, C.Bockstiegel, Ph.Dessagne, C.Donzaud, H.Geissel, A.Heinz, Z.Janas, C.Kozhuharov, Ch.Miehe, G.Munzenberg, M.Pfutzner, W.Schwab, C.Stephan, K.Summerer, L.Tassan-Got, B.Voss

Discovery and Cross-Section Measurement of 58 New Fission Products in Projectile-Fission of 750 x A MeV ²³⁸U

NUCLEAR REACTIONS Be(²³⁸U, X)⁵⁴Ca/⁵⁵Ca/⁵⁶Ca/⁵⁶Sc/⁵⁷Sc/⁵⁸Sc/⁵⁹Ti/⁶⁰Ti/⁶¹Ti/⁶²V/⁶³V/⁶⁴V/⁶⁵Cr/⁶⁶Cr/⁶⁷Cr/⁶⁷Mn/⁶⁸Mn/⁶⁹Mn/⁷⁰Fe/⁷¹Fe/⁷²Fe/⁷³Co/⁷⁴Co/⁷⁵Co/⁷⁷Ni/⁷⁸Ni/⁸⁰Cu/⁸²Zn/⁸³Zn/⁸⁵Ga/⁸⁶Ga/⁸⁷Ge/⁸⁸Ge/⁸⁹Ge/⁹⁰As/⁹¹As/⁹²As/⁹²Se/⁹³Se/⁹⁴Se/⁹⁵Br/⁹⁶Br/⁹⁷Br/⁹⁷Kr/⁹⁸Kr/⁹⁹Kr/¹⁰⁰Kr/¹⁰³Sr/¹⁰⁴Sr/¹⁰⁵Sr/¹⁰⁶Y/¹⁰⁷Y/¹⁰⁸Zr/¹⁰⁹Zr/¹¹⁰Zr/¹¹¹Nb/¹¹²Nb/¹¹³Nb/¹¹⁴Mo/¹¹⁶Tc/¹¹⁷Tc/¹¹⁹Ru/¹²²Rh/¹²⁴Pd, E=750 MeV/nucleon; measured projectile fission fragment yields, production σ. Fragment separator, tof techniques.

doi: 10.1016/S0370-2693(97)01216-1

1998BR30

Phys.Rev. C58, 2099 (1998)

B.A.Brown, W.A.Richter

Shell-Model Plus Hartree-Fock Calculations for the Neutron-Rich Ca Isotopes

NUCLEAR STRUCTURE ^{47,48,49,50,51,52,53,54,55,56,57,58,59,60}Ca; calculated binding energies, levels, J, π. ⁴⁸Ca calculated electron scattering form factors. Shell model plus Hartree-Fock approach.

doi: 10.1103/PhysRevC.58.2099

2008MA01

Phys.Rev. C 77, 014313 (2008)

P.F.Mantica, R.Broda, H.L.Crawford, A.Damaske, B.Fornal, A.A.Hecht, C.Hoffman, M.Horoi, N.Hoteling, R.V.F.Janssens, J.Pereira, J.S.Pinter, J.B.Stoker, S.L.Tabor, T.Sumikama, W.B.Walters, X.Wang, S.Zhu

β decay of neutron-rich ^53-56Ca

RADIOACTIVITY ^53,54,55,56Ca(β^-) [from ⁹Be(⁷⁶Ge, X), E=140 MeV/nucleon; measured Eγ, Iγ, βγ-coin, half-lives. ⁵⁴Ca; deduced Iβ, logft. ⁵⁴Sc; levels, J, π, half-lives, B(M1), B(E2), comparison with calculations.

NUCLEAR REACTIONS ⁹Be(⁷⁶Ge, X)⁴⁹Cl/⁵⁰Ar/⁵¹Ar/⁵²K/⁵³K/⁵⁴K/⁵³Ca/⁵⁴Ca/⁵⁵Ca/⁵⁶Ca/⁵⁵Sc/⁵⁶Sc/⁵⁷Sc/⁵⁷Ti/⁵⁸Ti/⁵⁹Ti/⁶⁰V, E=140 MeV/nucleon; measured reaction yields.

doi: 10.1103/PhysRevC.77.014313

2008MA17

Phys.Rev. C 77, 054309 (2008)

J.Margueron, H.Sagawa, K.Hagino

Effective pairing interactions with isospin density dependence

NUCLEAR STRUCTURE ^{36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62}Ca, ^{52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90}Ni, ^{100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162,163,164,165,166,167,168,169,170}Sn, ^{182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255,256,257,258,259,260,261,262,263,264,265,266,267}Pb; calculated odd-even mass staggering, binding energies, two-neutron separation energies, pairing gaps. Comparison with experimental data. ^110,150Sn; calculated particle densities, neutron Fermi momentum. Hartree-Fock-Bogoliubov model.

doi: 10.1103/PhysRevC.77.054309

2009CO19

Phys.Rev. C 80, 044311 (2009)

L.Coraggio, A.Covello, A.Gargano, N.Itaco

Spectroscopic study of neutron-rich calcium isotopes with a realistic shell-model interaction

NUCLEAR STRUCTURE ^{49,50,51,52,53,54,55}Ca, ⁵⁶Ca; calculated levels, J, π, and neutron-neutron two-body matrix elements using shell-model with a realistic effective interaction from the CD-Bonn nucleon-nucleon potential. ^{42,44,46,48,50,52,54,56}Ca; calculated ground-state energies per valence neutron and effective single-particle energies. Comparison with experimental data.

doi: 10.1103/PhysRevC.80.044311

2010TO07

Phys.Atomic Nuclei 73, 1684 (2010); Yad.Fiz. 73, 1731 (2010)

S.V.Tolokonnikov, E.E.Saperstein

Description of superheavy nuclei on the basis of a modified version of the DF3 energy functional

NUCLEAR STRUCTURE ^{35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57}Ca, ^{176,177,178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214}Pb, ^{218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255,256,257,258,259,260,261,262,263,264,265,266,267,268,269,270,271,272,273,274,275,276,277,278,279,280,281,282}U, ²⁹⁸Fl; calculated proton and neutron single-particle spectrum, neutron separation energies, rms charge radii. DF-3, HFB-17 functionals.

doi: 10.1134/S1063778810100054

2011BA52

J.Phys.:Conf.Ser. 312, 092015 (2011)

S.Baroni, A.O.Macchiavelli, A.Schwenk

Partial-wave contributions to pairing in nuclei

NUCLEAR STRUCTURE ^{37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57}Ca, ^{101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138}Sn, ^{185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213}Pb; calculated binding energy, mass excess using phenomenological EDF (energy-density formalism). Shown influence of partial waves, compared with data.

doi: 10.1088/1742-6596/313/9/092015

2012CA13

Phys.Rev. C 85, 034324 (2012)

M.A.Caprio, F.Q.Luo, K.Cai, V.Hellemans, Ch.Constantinou

Generalized seniority for the shell model with realistic interactions

NUCLEAR STRUCTURE ^{41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59}Ca; calculated levels, J, π, orbital occupations, quadrupole moments, B(E2), magnetic moment. Comparison between seniority (ν=1-3) model space and full shell-model space.

doi: 10.1103/PhysRevC.85.034324

2012HA26

Phys.Rev.Lett. 109, 032502 (2012)

G.Hagen, M.Hjorth-Jensen, G.R.Jansen, R.Machleidt, T.Papenbrock

Evolution of Shell Structure in Neutron-Rich Calcium Isotopes

NUCLEAR STRUCTURE ^{42,48,50,52,53,54,55,56,61}Ca, ^50,54,56Ti; calculated ground state energies, J, π. Chiral effective field theory, comparison with available data.

doi: 10.1103/PhysRevLett.109.032502

2013BR08

J.Phys.:Conf.Ser. 445, 012010 (2013)

B.A.Brown

Pairing and shell gaps in nuclei

NUCLEAR STRUCTURE ^{40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60}Ca; calculated ground-state energy, 2⁺ energy, 1n separation energy, Q. Z=6-92; calculated energy differences, Q of neighbouring isotopes. Shell model. Compared with available data.

doi: 10.1088/1742-6596/445/1/012010

2013LI13

Nucl.Phys. A900, 1 (2013)

J.Liu, Z.Ren, T.Dong

Theoretical study on neutron skin thickness of Ca isotopes by parity-violating electron scattering

NUCLEAR STRUCTURE ^44,48Ca, ²⁰⁸Pb; analyzed PVS (parity-violating electron scattering); calculated, deduced parity-violating asymmetry, symmetry energy, proton, neutron radius, neutron skin. ^{36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,41,52,53,54,55,56,57,58}Ca; calculated, deduced neutron, proton density distribution with nuclear radius and diffusivity fitted to FSUGold parameter set.

doi: 10.1016/j.nuclphysa.2013.01.034

2014HO12

Phys.Rev. C 90, 024312 (2014)

J.D.Holt, J.Menendez, J.Simonis, A.Schwenk

Three-nucleon forces and spectroscopy of neutron-rich calcium isotopes

NUCLEAR STRUCTURE ^{40,41,42,43,44,45,46,47,48,49,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70}Ca; calculated ground-state energies in pf and pfg9/2 shells, convergence of ⁴²Ca and ⁴⁸Ca ground-state energies as a function of increasing intermediate-state excitations; calculated levels, J, π, B(E2), B(M1) for ^{43,44,45,46,47,48,49,51,52,53,54,55,56,57}Ca, energy convergence. Chiral two- and three-nucleon (NN and 3N) interactions, and many-body perturbation theory (MBPT). Comparison with coupled-cluster calculations, and with available experimental data for A=43-57 Ca isotopes.

doi: 10.1103/PhysRevC.90.024312

2016HA34

Phys.Scr. 91, 063006 (2016)

G.Hagen, M.Hjorth-Jensen, G.R.Jansen, T.Papenbrock

Emergent properties of nuclei from ab initio coupled-cluster calculations

COMPILATION ^4,8He, ¹⁴C, ¹⁶O, ^40,48Ca, ⁵⁶Ni; compiled gs energy, mass excess, difference between theoretical charge radii and data; calculated gs energy, mass excess, charge radii using ab initio approach with chiral NNLO_sat interaction.

NUCLEAR STRUCTURE ^16,22,24,28O; calculated gs energy, mass excess using two NNLO_sat interactions. Compared to available data. ^17,23,25O, ^53,55,61Ca; calculated low-lying unbound levels, J, π using harmonic oscillator HF basis and Gamow-Hartree-Fock basis. ²⁰Ne, ²⁴Mg; calculated yrast states using CCEI (Coupled Cluster Effective Interaction) and USDB; compared to data.

doi: 10.1088/0031-8949/91/6/063006

2016KU21

J.Phys.(London) G43, 105104 (2016)

V.Kumar, P.C.Srivastava, H.Li

Nuclear β^--decay half-lives for fp and fpg shell nuclei

RADIOACTIVITY ^{52,53,54,55,56,57,58}Ca, ^{54,55,56,57,58,59,60,61}Sc, ^{56,57,58,59,60,61,62}Ti, ^{56,57,58,59,60,61,62,63}V, ^{59,60,61,62,63,64}Cr, ^{60,61,62,63,64,65}Mn, ^65,66Fe, ^64,65,66,67Co, ^{67,68,69,70,71,72,73,74,75,76,77,78}Ni, ^{68,69,70,71,72,73,74,75,76,77,78,79}Cu, ^{73,74,75,76,77,78,79,80}Zn(β^-); calculated T_1/2. Comparison with experimental data.

doi: 10.1088/0954-3899/43/10/105104

2018MI08

Phys.Rev.Lett. 121, 022506 (2018)

S.Michimasa, M.Kobayashi, Y.Kiyokawa, S.Ota, D.S.Ahn, H.Baba, G.P.A.Berg, M.Dozono, N.Fukuda, T.Furuno, E.Ideguchi, N.Inabe, T.Kawabata, S.Kawase, K.Kisamori, K.Kobayashi, T.Kubo, Y.Kubota, C.S.Lee, M.Matsushita, H.Miya, A.Mizukami, H.Nagakura, D.Nishimura, H.Oikawa, H.Sakai, Y.Shimizu, A.Stolz, H.Suzuki, M.Takaki, H.Takeda, S.Takeuchi, H.Tokieda, T.Uesaka, K.Yako, Y.Yamaguchi, Y.Yanagisawa, R.Yokoyama, K.Yoshida, S.Shimoura

Magic Nature of Neutrons in Ca54 : First Mass Measurements of ^55-57Ca

ATOMIC MASSES ^55,56,57Ca, ⁴⁸Ar, ^44,46Cl, ^40,42P, ⁴⁰Si; measured charge, TOF, magnetic rigidity, and flight path length between the timing detectors; deduced m/q spectrum of reference masses, mass excesses. Comparison with AME2016 evaluation.

doi: 10.1103/PhysRevLett.121.022506

2019BA42

Phys.Rev. C 100, 044308 (2019)

B.Bally, A.Sanchez-Fernandez, T.R.Rodriguez

Variational approximations to exact solutions in shell-model valence spaces: Calcium isotopes in the pf shell

NUCLEAR STRUCTURE ⁴⁸Ca; calculated total energy surfaces (TES) as a function of the quadrupole degrees of freedom in the (β₂, γ) plane, intrinsic pairing energy, particle-number projected, and particle-number and angular-momentum projected total energy surfaces as a function of the axial quadrupole (β₂, γ=0 or 180 degrees) and nn-pairing degrees of freedom, levels, J, π, wave functions, B(E2), spectroscopic electric quadrupole moments, occupation numbers. ^{42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60}Ca; calculated ground-state energies, energy difference between the approximate and exact ground-state energies computed with different variational approaches, excitation energies as a function of the angular momentum. Calculations used several projected generator coordinate methods (PGCM) in reproducing the exact eigenstates of the shell-model Hamiltonian KB3G in the pf-shell valence space.

doi: 10.1103/PhysRevC.100.044308

2019MO01

At.Data Nucl.Data Tables 125, 1 (2019)

P.Moller, M.R.Mumpower, T.Kawano, W.D.Myers

Nuclear properties for astrophysical and radioactive-ion-beam applications (II)

NUCLEAR STRUCTURE Z=8-136; calculated the ground-state odd-proton and odd-neutron spins and parities, proton and neutron pairing gaps, one- and two-neutron separation energies, quantities related to β-delayed one- and two-neutron emission probabilities, average energy and average number of emitted neutrons, β-decay energy release and T_1/2 with respect to Gamow-Teller decay with a phenomenological treatment of first-forbidden decays, one- and two-proton separation energies, and α-decay energy release and half-life.

doi: 10.1016/j.adt.2018.03.003

2019NE02

Phys.Rev.Lett. 122, 062502 (2019)

L.Neufcourt, Y.Cao, W.Nazarewicz, E.Olsen, F.Viens

Neutron Drip Line in the Ca Region from Bayesian Model Averaging

NUCLEAR STRUCTURE ^{50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82}Ca, ⁵²Cl, ⁵³Ar, ⁴⁹S; calculated one- and two-neutron separation energies, posterior probability of existence of neutron-rich nuclei in the Ca region.

doi: 10.1103/PhysRevLett.122.062502

2019SA02

Phys.Lett. B 788, 1 (2019)

G.Saxena, M.Kumawat, M.Kaushik, S.K.Jain, M.Aggarwal

Bubble structure in magic nuclei

NUCLEAR STRUCTURE ^{12,13,14,15,16,17,18,19,20,21,22,23,24}O, ^{34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70}Ca, ^{48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98}Ni, ^{80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150}Zr, ^{78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126}Sn, ^{178,179,180,181,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255,256,257,258,259,260,261,262}Pb, ²⁵¹Fr, ²⁹⁹Mc, ³⁰²Og, ²²Si, ³⁴Si, ⁴⁶Ar, ⁵⁶S, ⁵⁸Ar, ¹⁸⁴Ce, ³⁴⁷119, ²⁹²120, ³⁴¹Nh; calculated charge and matter densities, single particle levels and depletion fraction (DF) across the periodic chart; deduced that the central depletion is correlated to shell structure and occurs due to unoccupancy in s-orbit (2s, 3s, 4s) and inversion of (2s, 1d) and (3s, 1h) states in nuclei upto Z less or equal to 82. Bubble effect in superheavy region is a signature of the interplay between the Coulomb and nn-interaction where the depletion fraction is found to increase with Z (Coulomb repulsion) and decrease with isospin.

doi: 10.1016/j.physletb.2018.08.076

2019WA31

Chin.Phys.C 43, 124106 (2019)

X.-B.Wang, Y.-H.Meng, Y.Tu, G.-X.Dong

The structure of neutron-rich calcium isotopes studied by the shell model with realistic effective interactions

NUCLEAR STRUCTURE ^{41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58}Ca; calculated binding energies, two-neutron separation energies, energy levels, J, π, yrast states, spectroscopic factors. CD-Bonn and Kuo-Brown (KB) interactions.

doi: 10.1088/1674-1137/43/12/124106

2020BH06

J.Phys.(London) G47, 065105 (2020)

B.Bhoy, P.C.Srivastava, K.Kaneko

Shell model results for ^47-58Ca isotopes in the fp, fpg_9/2 and fpg_9/2d_5/2 model spaces

NUCLEAR STRUCTURE ^{47,48,49,50,51,52,53,54,55,56,57,58}Ca; calculated energy levels, J, π, occupancy, B(E2), nuclear magnetic moments, spectroscopic factors, wave functions. Comparison with available data.

doi: 10.1088/1361-6471/ab80d4

2020DA15

Phys.Rev. C 102, 064301 (2020)

A.C.Dassie, R.M.Id Betan

Estimate of the location of the neutron drip line for calcium isotopes from an exact Hamiltonian with continuum pair correlations

NUCLEAR STRUCTURE ^{41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73}Ca; calculated binding energies, S(2n), Fermi level and pairing gaps of even Ca isotopes, energies of single-particle bound levels for odd Ca isotopes from A=41-73, occupation probabilities for ^50,54,62,66Ca, for even Ca isotopes, binding energies of ^{51,53,55,57,59,61}Ca; deduced one particle drip line at ⁵⁷Ca, and the two neutron drip line at ⁶⁰Ca or ⁶⁶Ca, depending on the model used. Modified Richardson equations to solve the many-body system, with two isospin independent models, and an isospin dependent model. Comparison with available experimental data.

doi: 10.1103/PhysRevC.102.064301

2020LI35

Phys.Rev. C 102, 034302 (2020)

J.G.Li, B.S.Hu, Q.Wu, Y.Gao, S.J.Dai, F.R.Xu

Neutron-rich calcium isotopes within realistic Gamow shell model calculations with continuum coupling

NUCLEAR STRUCTURE ^{49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72}Ca; calculated binding energies, S(n), S(2n), neutron effective single-particle energies (ESPE), energies of the first 2+ states in even-A nuclei. ^{51,52,53,54,55,56,57,58}Ca; calculated levels, J, π. ^51,53,55,57Ca; calculated energies and widths of the first 5/2+ and 9/2+ resonance states. Realistic Gamow shell model based on high-precision CD-Bonn potential. Comparison with experimental data. ⁵⁷Ca; predicted as the heaviest odd-A bound Ca isotope. ⁷⁰Ca; predicted as the dripline nucleus. Calculations support shell closures at ⁵²Ca, ⁵⁴Ca, and possibly at ⁷⁰Ca, and a weakening of shell closure at ⁶⁰Ca.

doi: 10.1103/PhysRevC.102.034302

2020SO01

Phys.Rev. C 101, 014318 (2020)

V.Soma, P.Navratil, F.Raimondi, C.Barbieri, T.Duguet

Novel chiral Hamiltonian and observables in light and medium-mass nuclei

NUCLEAR STRUCTURE ³H, ^3,4,6,8He, ^6,7,9Li, ^7,8,9,10Be, ^10,11B, ^12,13,14C, ¹⁴N, ^14,16O, ³⁶Ca, ⁶⁸Ni; calculated ground-state energies. ^6,7,9Li, ^8,9Be, ^10,11B, ^12,13C; calculated levels, J, π. ^{12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28}O, ^{34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,70}Ca, ^{48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78}Ni; calculated total binding energies, S(2n), rms charge radii. ¹⁶O, ⁴⁰Ca, ⁵⁸Ni; calculated charge density distribution. ^47,49,53,55Ca, ⁵³K, ⁵⁵Sc; calculated levels, J, π populated in one-neutron removal and addition from and to ⁴⁸Ca and ⁵⁴Ca. ^{37,39,41,43,45,47,49,51,53,55}K; calculated energies of the first excited states. ¹⁶O, ³⁶Ca, ⁵⁶Ni; calculated binding energies. ¹⁸O, ⁵²Ca, ⁶⁴Ni; calculated rms charge radii. ³⁹K, ^49,53Ca; calculated one-nucleon separation energies. ^16,22,24O, ^{36,40,48,52,54,60}Ca, ^48,56,68Ni; calculated binding energy per particle for doubly closed-shell nuclei. State-of-the-art no-core shell model and self-consistent Green's function approaches with NN+3N(lnl) interaction, and with comparisons made with NNLO_sat and NN+3N(400) interactions, and with experimental data.

doi: 10.1103/PhysRevC.101.014318

2020TA01

Phys.Rev. C 101, 014620 (2020)

S.Tagami, M.Tanaka, M.Takechi, M.Fukuda, M.Yahiro

Chiral g-matrix folding-model approach to reaction cross sections for scattering of Ca isotopes on a C target

NUCLEAR STRUCTURE ^{40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,62,64}Ca; calculated β and γ deformation parameters, even and odd driplines, binding energies, charge, proton, neutron and matter radii, neutron skin for the ground states using Gogny-D1S Hartree-Fock-Bogoliubov (GHFB) theory with and without the angular momentum projection (AMP). Comparison with experimental data.

NUCLEAR REACTIONS ¹²C(⁴⁰Ca, X), (⁴¹Ca, X), (⁴²Ca, X), (⁴³Ca, X), (⁴⁴Ca, X), (⁴⁵Ca, X), (⁴⁶Ca, X), (⁴⁷Ca, X), (⁴⁸Ca, X), (⁴⁹Ca, X), (⁵⁰Ca, X), (⁵¹Ca, X), (⁵²Ca, X), (⁵³Ca, X), (⁵⁴Ca, X), (⁵⁵Ca, X), (⁵⁶Ca, X), (⁵⁷Ca, X), (⁵⁸Ca, X), (⁵⁹Ca, X), (⁶⁰Ca, X), (⁶²Ca, X), (⁶⁴Ca, X), E=280, 250.7 MeV; calculated reaction σ(E) using chiral g-matrix double-folding model (DFM), and compared with GHFB+AMP density, and available experimental data. ⁹Be, ¹²C, ²⁷Al(¹²C, X), E=30-400 MeV; calculated reaction σ(E) using chiral g-matrix double-folding model (DFM). Comparison with results from t-matrix DFM densities, and experimental data.

doi: 10.1103/PhysRevC.101.014620

2020ZH31

Phys.Rev. C 102, 034322 (2020)

Q.Zhao, P.Zhao, J.Meng

Impact of tensor forces on spin-orbit splittings in neutron-proton drops

NUCLEAR STRUCTURE ^{40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69}Ca; calculated spin-orbit splittings of single-particle states 1p and 1d orbitals in neutron-proton drops. N=8-50; calculated spin-orbit splittings of single-neutron states 1p, 1d, 1f and 2p as a function of the neutron number for neutron drops and neutron-proton drops with Z=1. Hartree-Fock (RHF) theory with the p-N coupling strength optimized to the relativistic Brueckner-Hartree-Fock (RBHF) results for neutron drops. Systematic study of the impact of tensor-force in neutron-proton drops.

doi: 10.1103/PhysRevC.102.034322

2021KO07

Chin.Phys.C 45, 030001 (2021)

F.G.Kondev, M.Wang, W.J.Huang, S.Naimi, G.Audi

The NUBASE2020 evaluation of nuclear physics properties

COMPILATION A=1-295; compiled, evaluated nuclear structure and decay data.

doi: 10.1088/1674-1137/abddae

2021LI33

Phys.Rev. C 104, 014315 (2021)

Y.Liu, C.Su, J.Liu, P.Danielewicz, C.Xu, Z.Ren

Improved naive Bayesian probability classifier in predictions of nuclear mass

ATOMIC MASSES Z=8-118, N=8-170; analyzed masses of 3245 nuclei using an improved naive Bayesian probability (iNBP) method, with classifications tables generated from determination of residuals between theoretical masses from FRDM, HFB and RMF models and the experimental values in AME2016; predicted by iNBP method nuclear masses of the nuclei added in AME2016, as compared to those in AME2003. ^{48,49,50,51,52,53,54,55,56,57,58,59,60,62,64,66,68,70}Ca; calculated binding energies using FRDM, HBF, and RMF methods with modifications by iNBP method, and compared with available experimental values from AME2016.

doi: 10.1103/PhysRevC.104.014315

2021MA73

Phys.Rev. C 104, L051302 (2021)

A.Magilligan, B.A.Brown, S.R.Stroberg

Data-driven configuration-interaction Hamiltonian extrapolation to ⁶⁰Ca

NUCLEAR STRUCTURE ^{46,47,48,49,50,51,52,53,54,55,56,57,58,59,60}Ca; calculated levels, J, π, S(2n); comparison of the two-body matrix elements (TBME) between the UFP-CA and the initial IMSRG interaction; deduced likely doubly magic nature of ⁶⁰Ca at a level similar to that of ⁶⁸Ni. State-of-the-art in-medium similarity renormalization group (IMSRG) interaction, with universal fp shell interaction for calcium isotopes (UFP-CA). Comparison with experimental data.

doi: 10.1103/PhysRevC.104.L051302

2021MI17

Phys.Rev. C 104, 044321 (2021)

F.Minato, T.Marketin, N.Paar

β-delayed neutron-emission and fission calculations within relativistic quasiparticle random-phase approximation and a statistical model

RADIOACTIVITY Z=8-110, N=11-209, A=19-318(β^-), (β^-n); calculated T_1/2, β^--delayed neutron emission (BDNE) branching ratios (P_0n, P_1n, P_2n, P_3n, P_4n, P_5n, P_6n, P_7n, P_8n, P_9n, P_10n), mean number of delayed neutrons per beta-decay, and average delayed neutron kinetic energy, total beta-delayed fission and α emission branching ratios for four fission barrier height models (ETFSI, FRDM, SBM, HFB-14). Z=93-110, N=184-200, A=224-318; calculated T_1/2, β^--delayed fission (BDF) branching ratios (P_0f, P_1f, P_2f, P_3f, P_4f, P_5f, P_6f, P_7f, P_8f, P_9f, P_10f), total beta-delayed fission and beta-delayed neutron emission branching ratios for four fission barrier height models ^140,162Sn; calculated β strength functions, β^--delayed neutron branching ratios from P_0n to P_10n by pn-RQRPA+HFM and pn-RQRPA methods. ^{137,138,139,140,156,157,158,159,160,161,162}Sb; calculated isotope production ratios as a function of excitation energy. ^{123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156}Pd, ^{120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159}Ag, ^{200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250}Os, ^{200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,216,217,218,219,220,221,222,223,224,225,226,227,228,229,230,231,232,233,234,235,236,237,238,239,240,241,242,243,244,245,246,247,248,249,250,251,252,253,254,255}Ir; calculated β-delayed one neutron branching ratio P_1n by pn-RQRPA+HFM, pn-RQRPA, and FRDM+QRPA+HFM methods, and compared with available experimental data. ⁸⁹Br, ¹³⁸I; calculated β-delayed neutron spectrum by pn-RQRPA+HFM method, and compared with experimental spectra. ^{260,261,262,263,264,265,266,267,268,269,270,271,272,273,274,275,276,277,278,279,280,281,282,283,284,285,286,287,288,289,290,291,292,293,294,295,296,297,298,299,300,301,302,303,304,305,306,307,308,309,310,311,312,313,314,315,316,317,318,319,320,321,322,323,324,325,326,327,328,329,330}Fm; calculated fission barrier heights for HFB-14, FRDM, ETFSI and SBM models, mean numbers and mean energies of emitted β-delayed neutrons by pn-RQRPA+HFM and pn-RQRPA methods. ^{63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99}Ni, ^{120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,161,162,163,164,165,166,167,168,169,170}Sn; calculated mean numbers and mean energies of emitted β-delayed neutrons by pn-RQRPA+HFM and pn-RQRPA methods. Z=70-110, N=120-190; calculated β^--delayed α branching ratios P_α (%) for FRDM fission barrier data. Fully self-consistent covariant density-functional theory (CDFT), with the ground states of all the nuclei calculated with the relativistic Hartree-Bogoliubov (RHB) model with the D3C^* interaction, and relativistic proton-neutron quasiparticle random-phase approximation (pn-RQRPA) for β strength functions, with particle evaporations and fission from highly excited nuclear states estimated by Hauser-Feshbach statistical model (pn-RQRPA+HFM) for four fission barrier height models (ETFSI, FRDM, SBM, HFB-14). Detailed tables of numerical data for β-delayed neutron emission (BDNE), β-delayed fission (BDF) and β-delayed α-particle emission branching ratios are given in the Supplemental Material of the paper.

doi: 10.1103/PhysRevC.104.044321

2021WA16

Chin.Phys.C 45, 030003 (2021)

M.Wang, W.J.Huang, F.G.Kondev, G.Audi, S.Naimi

The AME 2020 atomic mass evaluation (II). Tables, graphs and references

ATOMIC MASSES A=1-295; compiled, evaluated atomic masses, mass excess, β-, ββ and ββββ-decay, binding, neutron and proton separation energies, decay and reaction Q-value data.

doi: 10.1088/1674-1137/abddaf

2022DO01

Phys.Rev. C 105, 014308 (2022)

X.-X.Dong, R.An, J.-X.Lu, L.-S.Geng

Novel Bayesian neural network based approach for nuclear charge radii

NUCLEAR STRUCTURE ^{34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55}Ca, ^{32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55}K; calculated charge radii by the Nerlo-Pomorska and Pomorski (NP) formula, D2 and D4 models, and compared with the experimental data; deduced strong odd-even staggerings. Novel approach combining a three-parameter formula and Bayesian neural network for charge radii.

doi: 10.1103/PhysRevC.105.014308

2022KO06

Phys.Lett. B 827, 136953 (2022)

T.Koiwai, K.Wimmer, P.Doornenbal, A.Obertelli, C.Barbieri, T.Duguet, J.D.Holt, T.Miyagi, P.Navratil, K.Ogata, N.Shimizu, V.Soma, Y.Utsuno, K.Yoshida, N.L.Achouri, H.Baba, F.Browne, D.Calvet, F.Chateau, S.Chen, N.Chiga, A.Corsi, M.L.Cortes, A.Delbart, J.-M.Gheller, A.Giganon, A.Gillibert, C.Hilaire, T.Isobe, T.Kobayashi, Y.Kubota, V.Lapoux, H.N.Liu, T.Motobayashi, I.Murray, H.Otsu, V.Panin, N.Paul, W.Rodriguez, H.Sakurai, M.Sasano, D.Steppenbeck, L.Stuhl, Y.L.Sun, Y.Togano, T.Uesaka, K.Yoneda, O.Aktas, T.Aumann, L.X.Chung, F.Flavigny, S.Franchoo, I.Gasparic, R.-B.Gerst, J.Gibelin, K.I.Hahn, D.Kim, Y.Kondo, P.Koseoglou, J.Lee, C.Lehr, B.D.Linh, T.Lokotko, M.MacCormick, K.Moschner, T.Nakamura, S.Y.Park, D.Rossi, E.Sahin, P.-A.Soderstrom, D.Sohler, S.Takeuchi, H.Toernqvist, V.Vaquero, V.Wagner, S.Wang, V.Werner, X.Xu, H.Yamada, D.Yan, Z.Yang, M.Yasuda, L.Zanetti

A first glimpse at the shell structure beyond ⁵⁴Ca: Spectroscopy of ⁵⁵K, ⁵⁵Ca, and ⁵⁷Ca

NUCLEAR REACTIONS ¹H(⁵⁶Ca, 2p)⁵⁵K, (⁵⁶Ca, np)⁵⁵Ca, E=250 MeV/nucleon; ¹H(⁵⁸Sc, 2p)⁵⁷Ca, E not given, [secondary ⁵⁶Ca and ⁵⁸Sc beams from ⁹Be(⁷⁰Zn, X), E=345 MeV/nucleon, followed by selection of fragments of interest using the BigRIPS separator through the TOF-ΔE-Bρ method at RIBF-RIKEN facility]; measured reaction products using the by SAMURAI magnetic spectrometer, protons, Eγ, Iγ, (proton)γ-coin using thick liquid hydrogen target system MINOS and DALI2² array of 226 NaI(Tl) scintillator detectors. ⁵⁵K, ^55,57Ca; deduced levels, J, π, level half-lives, exclusive population σ, spectroscopic factors, short-lived state in ⁵⁷Ca. Comparison with state-of-the-art theoretical calculations using different approaches such as large-scale shell model (LSSM), valence-space in-medium similarity renormalization group (VS-IMSRG), full-space self-consistent Green's function (SCGF) with NNLO_sat and NN+3N(lnl) interactions.

doi: 10.1016/j.physletb.2022.136953