R. Coleman

First observation of the fine structure of the Pygmy Dipole Resonance in a nucleus away from stability via the $β^-$ decay of $^{92}$Rb to $^{92}$Sr

P. Spagnoletti, M. Ramalho, S. Tahtela, E. Kauppinen et autres

A comprehensive $γ$-ray spectroscopy study of excited states in $^{92}$Sr populated via $β^-$ decay of $^{92}$Rb ($J^π=0^-$, $Q_β=8095(6)$~keV) was performed with the GRIFFIN spectrometer at the Isotope Separator and Accelerator (ISAC) radioactive ion beam facility at TRIUMF. The high $γ$-ray efficiency of …

Direct measurement of $^{59}$Cu($p$,$α$)$^{56}$Ni precludes a strong NiCu cycle in Type-I X-ray bursts

N. Bhathi, J.S. Randhawa, R. Kanungo, J. Refsgaard et autres

Model-observation comparisons of type-I X-ray bursts (XRBs) can reveal the properties of accreting neutron star systems, including the neutron star compactness. XRBs are powered by nuclear burning and a handful of reactions have been shown to impact the model results. Reactions in …

Intruder structures in Si 32 and Al 29

Greg Hackman, K. Starosta, Rebeka Sultana Lubna, Priyanka Choudhary et autres

International audience

ca, us, in, de, fr, gb (code pays fourni par la source)

Mirror symmetry in the f7/2 shell below 56Ni, excited states and electromagnetic transition rates in 55Ni and 55Co

H. Asch, C. Andreoiu, C. Angus, D. Annen et autres

Mirror nuclei near doubly magic 56 Ni are being explored at TRIUMF, Canada's particle accelerator centre. A stable 20 Ne beam experiment to produce 55 Co and a complimentary radioactive 21 Na beam experiment to produce 55 Ni were conducted. These experiments …

ca, us (code pays fourni par la source)

Investigation of the excited states of 114Sn using the GRIFFIN spectrometer at TRIUMF

N.K. Syeda, P. Spagnoletti, C. Andreoiu, Costel Marian Petrache et autres

ca, fr, es, gb (code pays fourni par la source)

Cross-shell excited states in 32Si and 29Al populated using fusion-evaporation

Jonathan H. Williams, Greg Hackman, K. Starosta, Rebeka Sultana Lubna et autres

ca, us, in, de (code pays fourni par la source)

Identifying the spin-trapped character of the Si 32 isomeric state

Jonathan H. Williams, Greg Hackman, K. Starosta, Rebeka Sultana Lubna et autres

The properties of a nanosecond isomer in $^{32}\mathrm{Si}$, disputed in previous studies, depend on the evolution of proton and neutron shell gaps near the island of inversion. We have placed the isomer at 5505.2(2) keV with ${J}^{\ensuremath{\pi}}={5}^{\ensuremath{-}}$, decaying primarily via an $E3$ …

ca, fr, us, in, de, gb (code pays fourni par la source)

First Evidence of Axial Shape Asymmetry and Configuration Coexistence in Zn 74 : Suggestion for a Northern Extension of the N = 40 Island of Inversion

M. Rocchini, Paul E. Garrett, M. Zielińska, S. M. Lenzi et autres

The excited states of $N=44$ $^{74}\mathrm{Zn}$ were investigated via $\ensuremath{\gamma}$-ray spectroscopy following $^{74}\mathrm{Cu}$ $\ensuremath{\beta}$ decay. By exploiting $\ensuremath{\gamma}\text{\ensuremath{-}}\ensuremath{\gamma}$ angular correlation analysis, the ${2}_{2}^{+}$, ${3}_{1}^{+}$, ${0}_{2}^{+}$, and ${2}_{3}^{+}$ states in $^{74}\mathrm{Zn}$ were firmly established. The $\ensuremath{\gamma}$-ray branching and $E2/M1$ mixing ratios for transitions …

ca, fr, it, us, fi, gb (code pays fourni par la source)

THE PRODUCTION OF SPACE: ONLINE EXPERIENTIAL LEARNING

Sanjiv Dugal, Kunsinee Srivichaiin, Rebecca Levesque, R. Coleman et autres

S. Dugal1K. Srivichaiin1R. Levesque1R. Coleman1A. Mogauro1P. Ellliott1M. Rizzo1L. Hurley1J. Digrazia1E. Bazile1B. Conti1K. Gauvin1A. Ornberg1M. Bergantine1T. DeJulia1A. Miller1Z. Kent1C. Gosselin1J. Sousa1G. Fawcett1A. Newton1C. Mitchell1H. Pangburn1J. Rosati1D. Casavant1S. Singh2R. Singh3

First direct measurement of Cu59(p,α)Ni56 : A step towards constraining the Ni-Cu cycle in the cosmos

J.S. Randhawa, Rumpa Kanungo, J. Refsgaard, P. Mohr et autres

Reactions on proton-rich nuclides drive the nucleosynthesis in core collapse supernovae (CCSNe) and in x-ray bursts (XRBs). CCSNe eject the nucleosynthesis products to the interstellar medium and hence are a potential inventory of $p$ nuclei, whereas in XRBs nucleosynthesis powers the light …

us, ca, hu, cz, de (code pays fourni par la source)

Coulomb excitation of Kr80,82 and a change in structure approaching N=Z=40

S. A. Gillespie, J. Henderson, K. Abrahams, F. A. Ali et autres

Background: Nuclei approaching $N=Z=40$ are known to exhibit strongly deformed structures and are thought to be candidates for shape coexistence. In the krypton isotopes, $^{80,82}\mathrm{Kr}$ are poorly characterized, preventing an understanding of evolving deformation approaching $N=40$.Purpose: The present work aims to determine …

ca, us, gb, Afrique du Sud, iq (code pays fourni par la source)

First direct measurement of $^{59}$Cu(p,$\alpha$)$^{56}$Ni: A step towards constraining the Ni-Cu cycle in the Cosmos.

J.S. Randhawa, Rumpa Kanungo, J. Refsgaard, P. Mohr et autres

Reactions on the proton-rich nuclides drive the nucleosynthesis in Core-Collapse Supernovae (CCSNe) and in X-ray bursts (XRBs). CCSNe eject the nucleosynthesis products to the interstellar medium and hence are a potential inventory of p-nuclei, whereas in XRBs nucleosynthesis powers the light curves. …