1.
|
First Evidence of Axial Shape Asymmetry and Configuration Coexistence in <math display="inline"><mrow><mmultiscripts><mrow><mi>Zn</mi></mrow><mprescripts/><none/><mrow><mn>74</mn></mrow></mmultiscripts></mrow></math>: Suggestion for a Northern Extension of the <math display="inline"><mi>N</mi><mo>=</mo><mn>40</mn></math> Island of Inversion
/ Rocchini, M. (Guelph U.) ; Garrett, P.E. (Guelph U.) ; Zielínska, M. (IRFU, Saclay) ; Lenzi, S.M. (Padua U. ; INFN, Padua) ; Dao, D.D. (Strasbourg, IPHC) ; Nowacki, F. (Strasbourg, IPHC) ; Bildstein, V. (Guelph U.) ; MacLean, A.D. (Guelph U.) ; Olaizola, B. (TRIUMF ; CERN) ; Ahmed, Z.T. (Guelph U.) et al.
The excited states of $N=44$$^{74}$Zn were investigated via $\gamma$-ray spectroscopy following $^{74}$Cu $\beta$ decay. By exploiting $\gamma$-$\gamma$ angular correlation analysis, the $2_2^+$, $3_1^+$, $0_2^+$ and $2_3^+$ states in $^{74}$Zn were firmly established. [...]
arXiv:2302.07394.-
2023-03-24 - 6 p.
- Published in : Phys. Rev. Lett. 130 (2023) 122502
Fulltext: PDF;
|
|
2.
|
Cross sections of the <math><mrow><mmultiscripts><mi>Rb</mi><mprescripts/><none/><mn>83</mn></mmultiscripts><mo>(</mo><mi>p</mi><mo>,</mo><mi>γ</mi><mo>)</mo><mmultiscripts><mi>Sr</mi><mprescripts/><none/><mn>84</mn></mmultiscripts></mrow></math> and <math><mrow><mmultiscripts><mi>Kr</mi><mprescripts/><none/><mn>84</mn></mmultiscripts><mo>(</mo><mi>p</mi><mo>,</mo><mi>γ</mi><mo>)</mo><mmultiscripts><mi>Rb</mi><mprescripts/><none/><mn>85</mn></mmultiscripts></mrow></math> reactions at energies characteristic of the astrophysical <math><mi>γ</mi></math> process
/ Williams, M. (TRIUMF ; York U., England) ; Davids, B. (TRIUMF ; Simon Fraser U.) ; Lotay, G. (Surrey U.) ; Nishimura, N. (Wako, RIKEN ; Nishina Ctr., RIKEN) ; Rauscher, T. (Basel U. ; Hertfordshire U.) ; Gillespie, S.A. (TRIUMF ; Michigan State U.) ; Alcorta, M. (TRIUMF) ; Amthor, A.M. (Bucknell U.) ; Ball, G.C. (TRIUMF) ; Bhattacharjee, S.S. (TRIUMF) et al.
We have measured the cross section of the $^{83}$Rb(p,$\gamma)^{84}$Sr radiative capture reaction in inverse kinematics using a radioactive beam of $^{83}$Rb at incident energies of 2.4 and $2.7 A$ MeV. Prior to the radioactive beam measurement, the $^{84}$Kr(p,$\gamma)^{85}$Rb radiative capture reaction was measured in inverse kinematics using a stable beam of $^{84}$Kr at an incident energy of $2.7 A$ MeV. [...]
arXiv:2303.10282.-
2023-03-13 - 10 p.
- Published in : Phys. Rev. C 107 (2023) 035803
Fulltext: PDF;
|
|
3.
|
High-precision half-life determination of $^{14}$O via direct $\beta $ counting
/ Sharma, S. (Regina U.) ; Grinyer, G.F. (Regina U.) ; Ball, G.C. (TRIUMF) ; Leslie, J.R. (Queen's U., Kingston) ; Svensson, C.E. (Guelph U.) ; Ali, F.A. (Guelph U. ; Sulaimaniya U.) ; Andreoiu, C. (Simon Fraser U., Dept. Chem.) ; Bernier, N. (TRIUMF ; British Columbia U. ; Western Cape U. ; Zululand U.) ; Bhattacharjee, S.S. (TRIUMF) ; Bildstein, V. (Guelph U.) et al.
The half-life of the superallowed Fermi $\beta^+$ emitter $^{14}$O was determined to high precision via a direct $\beta$ counting experiment performed at the Isotope Separator and Accelerator (ISAC) facility at TRIUMF. The result, $T_{1/2}$($^{14}$O) = 70619.2(76) ms, is consistent with, but is more precise than, the world average obtained from 11 previous measurements. [...]
arXiv:2204.06668.-
2022-05-03 - 8 p.
- Published in : Eur. Phys. J. A 58 (2022) 83
Fulltext: PDF; Publication: PDF;
|
|
4.
|
|
5.
|
Nuclear charge radius of $^{26m}$Al and its implication for V$_{ud}$ in the quark-mixing matrix
/ Plattner, P. (CERN ; Innsbruck U. ; Heidelberg, Max Planck Inst.) ; Wood, E. (Liverpool U.) ; Ayoubi, L. Al (Jyvaskyla U.) ; Beliuskina, O. (Jyvaskyla U.) ; Bissell, M.L. (Manchester U. ; CERN) ; Blaum, K. (Heidelberg, Max Planck Inst.) ; Campbell, P. (Manchester U.) ; Cheal, B. (Liverpool U.) ; de Groote, R.P. (Jyvaskyla U.) ; Devlin, C.S. (Liverpool U.) et al.
Collinear laser spectroscopy was performed on the isomer of the aluminium isotope $^{26m}$Al. The measured isotope shift to $^{27}$Al in the $3s^{2}3p\;^{2}\!P^\circ_{3/2} \rightarrow 3s^{2}4s\;^{2}\!S_{1/2}$ atomic transition enabled the first experimental determination of the nuclear charge radius of $^{26m}$Al, resulting in $R_c$=\qty{3.130±.015}{\femto\meter}. [...]
arXiv:2310.15291.-
2023-11-27 - 7 p.
- Published in : Phys. Rev. Lett. 131 (2023) 222502
Fulltext: 2310.15291 - PDF; Publication - PDF;
|
|
6.
|
Isomeric excitation energy for $^{99}$In$^{m}$ from mass spectrometry reveals constant trend next to doubly magic $^{100}$Sn
/ Nies, L. (CERN ; Greifswald U.) ; Atanasov, D. (CERN) ; Athanasakis-Kaklamanakis, M. (CERN ; Leuven U.) ; Au, M. (CERN ; Mainz U.) ; Blaum, K. (Heidelberg, Max Planck Inst.) ; Dobaczewski, J. (Warsaw U.) ; Hu, B.S. (TRIUMF) ; Holt, J.D. (TRIUMF ; McGill U.) ; Karthein, J. (MIT) ; Kulikov, I. (Darmstadt, GSI) et al.
The excitation energy of the 1/2$^-$ isomer in $^{99}$In at ${N=50}$ is measured to be 671(37) keV and the mass uncertainty of the 9/2$^+$ ground state is significantly reduced using the ISOLTRAP mass spectrometer at ISOLDE/CERN. The measurements exploit a major improvement in the resolution of the multi-reflection time-of-flight mass spectrometer. [...]
arXiv:2306.02033.-
2023-07-14 - 13 p.
- Published in : Phys. Rev. Lett. 131 (2023) 022502
Fulltext: 2306.02033 - PDF; Publication - PDF;
|
|
7.
|
Nuclear Charge Radii of the Nickel Isotopes $^{58-68,70}$Ni
/ Malbrunot-Ettenauer, S. (CERN) ; Kaufmann, S. (Darmstadt, Tech. U.) ; Bacca, S. (Mainz U., Inst. Kernchem. ; Helmholtz Inst., Mainz) ; Barbieri, C. (Surrey U. ; Milan U. ; INFN, Milan) ; Billowes, J. (Manchester U.) ; Bissell, M.L. (Manchester U.) ; Blaum, K. (Heidelberg, Max Planck Inst.) ; Cheal, B. (Liverpool U.) ; Duguet, T. (IRFU, Saclay) ; Ruiz, R.F. Garcia (CERN ; Manchester U.) et al.
Collinear laser spectroscopy is performed on the nickel isotopes $^{58-68,70}$Ni, using a time-resolved photon counting system. From the measured isotope shifts, nuclear charge radii $R_c$ are extracted and compared to theoretical results. [...]
arXiv:2112.03382.-
2022-01-14 - 8 p.
- Published in : Phys. Rev. Lett. 128 (2022) 022502
Fulltext: PhysRevLett.128.022502 - PDF; 2112.03382 - PDF;
|
|
8.
|
Investigating nuclear structure near $N = 32$ and $N = 34$: Precision mass measurements of neutron-rich Ca, Ti and V isotopes
/ Porter, W.S. (TRIUMF ; British Columbia U.) ; Dunling, E. (TRIUMF ; York U., England) ; Leistenschneider, E. (Michigan State U., East Lansing (main) ; CERN ; Michigan State U., NSCL) ; Bergmann, J. (U. Giessen, II. Phys. Inst.) ; Bollen, G. (Michigan State U., East Lansing (main) ; Michigan State U., NSCL ; Michigan State U.) ; Dickel, T. (U. Giessen, II. Phys. Inst. ; Darmstadt, GSI) ; Dietrich, K.A. (TRIUMF ; U. Heidelberg (main)) ; Hamaker, A. (Michigan State U., East Lansing (main) ; Michigan State U., NSCL ; Michigan State U.) ; Hockenbery, Z. (TRIUMF ; McGill U.) ; Izzo, C. (TRIUMF) et al.
Nuclear mass measurements of isotopes are key to improving our understanding of nuclear structure across the chart of nuclides, in particular for the determination of the appearance or disappearance of nuclear shell closures. We present high-precision mass measurements of neutron-rich Ca, Ti and V isotopes performed at the TITAN and LEBIT facilities. [...]
arXiv:2206.15329.-
2022-08-10 - 7 p.
- Published in : Phys. Rev. C 106 (2022) 024312
Fulltext: PDF;
|
|
9.
|
High-Precision Mass Measurements of Neutron Deficient Silver Isotopes Probe the Robustness of the <math display="inline"><mrow><mi>N</mi><mo>=</mo><mn>50</mn></mrow></math> Shell Closure
/ Ge, Zhuang (Jyvaskyla U.) ; Reponen, Mikael (Jyvaskyla U.) ; Eronen, Tommi (Jyvaskyla U.) ; Hu, Baishan (TRIUMF ; ORNL, Oak Ridge (main) ; Oak Ridge) ; Kortelainen, Markus (Jyvaskyla U.) ; Kankainen, Anu (Jyvaskyla U.) ; Moore, Iain (Jyvaskyla U.) ; Nesterenko, Dmitrii (Jyvaskyla U.) ; Yuan, Cenxi (SYSU, Guangzhou) ; Beliuskina, Olga (Jyvaskyla U.) et al.
High-precision mass measurements of exotic $^{95-97}$Ag isotopes close to the $N = Z$ line have been conducted with the JYFLTRAP double Penning trap mass spectrometer, with the silver ions produced using the recently commissioned inductively-heated hot cavity catcher laser ion source at the Ion Guide Isotope Separator On-Line facility. The atomic mass of $^{95}$Ag was directly determined for the first time. [...]
arXiv:2401.07976.-
2024-09-26 - 9 p.
- Published in : Phys. Rev. Lett. 133 (2024) 132503
Fulltext: PDF;
|
|
10.
|
Summit of the N=40 Island of Inversion: precision mass measurements and ab initio calculations of neutron-rich chromium isotopes
/ Silwal, R. (TRIUMF ; Appalachian State U.) ; Andreoiu, C. (Simon Fraser U.) ; Ashrafkhani, B. (Calgary U.) ; Bergmann, J. (Giessen U.) ; Brunner, T. (McGill U.) ; Cardona, J. (TRIUMF ; Manitoba U.) ; Dietrich, K. (TRIUMF ; Heidelberg U.) ; Dunling, E. (TRIUMF ; York U., England) ; Gwinner, G. (Manitoba U.) ; Hockenbery, Z. (TRIUMF ; McGill U.) et al.
Mass measurements continue to provide invaluable information for elucidating nuclear structure and scenarios of astrophysical interest. The transition region between the $Z = 20$ and $28$ proton shell closures is particularly interesting due to the onset and evolution of nuclear deformation as nuclei become more neutron rich. [...]
arXiv:2204.09566.-
2022-10-10 - 12 p.
- Published in : Phys. Lett. B 833 (2022) 137288
Fulltext: PDF;
|
|