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Half-lives of neutron-rich<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Cd</mml:mi><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>128</mml:mn><mml:mo>–</mml:mo><mml:mn>130</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>

R. DunlopDepartment of Physics, University of Guelph, Guelph, Ontario N1G 2W1, CanadaV. BildsteinDepartment of Physics, University of Guelph, Guelph, Ontario N1G 2W1, CanadaI. DillmannDepartment of Physics and Astronomy, University of Victoria, Victoria, British Columbia V8P 5C2, CanadaA. JungclausInstituto de Estructura de la Materia, CSIC, E-28006 Madrid, SpainC. E. SvenssonDepartment of Physics, University of Guelph, Guelph, Ontario N1G 2W1, CanadaC. AndreoiuDepartment of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, CanadaG. C. BallTRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, CanadaN. BernierDepartment of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z4, CanadaH. BidamanDepartment of Physics, University of Guelph, Guelph, Ontario N1G 2W1, CanadaP. BoubelDepartment of Physics, University of Guelph, Guelph, Ontario N1G 2W1, CanadaC. BurbadgeDepartment of Physics, University of Guelph, Guelph, Ontario N1G 2W1, CanadaR. Caballero-FolchTRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, CanadaM. R. DunlopDepartment of Physics, University of Guelph, Guelph, Ontario N1G 2W1, CanadaL. J. EvittsDepartment of Physics, University of Surrey, Guildford GU2 7XH, United KingdomF. H. GarciaDepartment of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, CanadaA. B. GarnsworthyTRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, CanadaP. E. GarrettDepartment of Physics, University of Guelph, Guelph, Ontario N1G 2W1, CanadaG. HackmanTRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, CanadaS. HallamDepartment of Physics, University of Surrey, Guildford GU2 7XH, United KingdomJ. HendersonTRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, CanadaS. IlyushkinDepartment of Physics, Colorado School of Mines, Golden, Colorado 80401, USAD. KisliukDepartment of Physics, University of Guelph, Guelph, Ontario N1G 2W1, CanadaR. KrückenTRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, CanadaJ. LassenDepartment of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba R3T 2N2, CanadaRuohong LiE. MacConnachieTRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, CanadaA. D. MacLeanDepartment of Physics, University of Guelph, Guelph, Ontario N1G 2W1, CanadaE. McGeeDepartment of Physics, University of Guelph, Guelph, Ontario N1G 2W1, CanadaM. MoukaddamTRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, CanadaB. OlaizolaDepartment of Physics, University of Guelph, Guelph, Ontario N1G 2W1, CanadaE. Padilla-RodalUniversidad Nacional Autnoma de Mxico, Instituto de Ciencias Nucleares, AP 70-543, Mxico City 04510, DF, MxicoJ. ParkDepartment of Physics and Astronomy, University of British Columbia, Vancouver, British Columbia V6T 1Z4, CanadaO. PaetkauTRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, CanadaC. M. PetracheCentre de Sciences Nuclaires et Sciences de la Matire, CNRS/IN2P3, Universit Paris-Saclay, 91405 Orsay, FranceJ. L. PoreDepartment of Chemistry, Simon Fraser University, Burnaby, British Columbia V5A 1S6, CanadaA. J. RadichDepartment of Physics, University of Guelph, Guelph, Ontario N1G 2W1, CanadaP. RuotsalainenTRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, CanadaJ. SmallcombeTRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, CanadaJ. K. SmithTRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, CanadaS. L. TaborDepartment of Physics, Florida State University, Tallahassee, Florida 32306, USAA. TeigelhöferTRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia V6T 2A3, CanadaJ. TurkoDepartment of Physics, University of Guelph, Guelph, Ontario N1G 2W1, CanadaT. ZidarDepartment of Physics, University of Guelph, Guelph, Ontario N1G 2W1, Canada

Physical review. Cjournal2016lv

ABI

Аннотация

The $\ensuremath{\beta}$-decay half-lives of $^{128--130}\mathrm{Cd}$ have been measured with the newly commissioned GRIFFIN $\ensuremath{\gamma}$-ray spectrometer at the TRIUMF-ISAC facility. The time structures of the most intense $\ensuremath{\gamma}$ rays emitted following the $\ensuremath{\beta}$ decay were used to determine the half-lives of $^{128}\mathrm{Cd}$ and $^{130}\mathrm{Cd}$ to be ${T}_{1/2}=246.2\phantom{\rule{0.16em}{0ex}}(21)$ ms and ${T}_{1/2}=126\phantom{\rule{0.16em}{0ex}}(4)$ ms, respectively. The half-lives of the $3/{2}^{+}$ and $11/{2}^{\ensuremath{-}}$ states of $^{129}\mathrm{Cd}$ were measured to be ${T}_{1/2}(3/{2}^{+})=157\phantom{\rule{0.16em}{0ex}}(8)$ ms and ${T}_{1/2}(11/{2}^{\ensuremath{-}})=147\phantom{\rule{0.16em}{0ex}}(3)$ ms. The half-lives of the Cd isotopes around the $N=82$ shell closure are an important ingredient in astrophysical simulations to derive the magnitude of the second $r$-process abundance peak in the $A\ensuremath{\sim}130$ region. Our new results are compared with recent literature values and theoretical calculations.

Мавзулар

Nuclear physics research studies Astronomical and nuclear sciences Nuclear Physics and Applications

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DOI: 10.1103/physrevc.93.062801

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