42 citations · 340 across the 27 of their papers we have counts for
25 papers · 1 filter
Experimental Study of the S Excited Level Scheme
C. R. Hoffman, R. S. Lubna, E. Rubino +20
Information on the S level scheme was expanded through experimental work utilizing a fusion-evaporation reaction and in-beam -ray spectroscopy. Prompt -ray transitions…
decay of neutron-rich Cl at magic number N=28
Soumik Bhattacharya, Vandana Tripathi, S. L. Tabor +25
Results from the study of -decay of Cl, produced in the fragmentation of a 140-MeV/u Ca beam, are presented. The half-life for Cl -decay is measured to…
The Core of F studied by the F(-1p)O reaction
H. L. Crawford, M. D. Jones, A. O. Macchiavelli +19
The F(O reaction was studied at the NSCL using the S800 spectrometer. The experimental spectroscopic factor for the ground-state to ground-state transiti…
Zn -delayed proton emission establishes the Ni -process waiting point bypass
M. Saxena, W. -J Ong, Z. Meisel +32
We measured the Zn -delayed proton (p) and emission at the National Superconducting Cyclotron Laboratory. We find a Zn half-life of 43.6 0.2 ms, p…
Spectroscopic study of Ca from the decay of K
J. K. Smith, A. B. Garnsworthy, J. L. Pore +30
The decay of K to Ca is an appropriate mechanism for benchmarking interactions spanning the and shells, but current knowledge of the -decay schem…
Shell structure of S and collapse of the shell closure
S. Momiyama, K. Wimmer, D. Bazin +13
The single-particle structure of the isotones provides insights into the shell evolution of neutron-rich nuclei from the doubly-magic Ca toward the drip line. …
Single-particle structure in neutron-rich Sr isotopes approaching the N = 60 shape transition
S. Cruz, K. Wimmer, S. S. Bhattacharjee +33
Background: Neutron-rich nuclei around neutron number N = 60 show a dramatic shape transition from spherical ground states to prolate deformation in 98Sr and heavier nuclei. Purpos…
Shape Coexistence at Zero Spin in 64Ni Driven by the Monopole Tensor Interaction
N. Mărginean, D. Little, Y. Tsunoda +75
The low-spin structure of the semimagic 64Ni nucleus has been considerably expanded: combining four experiments, several 0+ and 2+ excited states were identified below 4.5 MeV, and…
Two-neutron knockout as a probe of the composition of states in Mg, Al, and Si
B. Longfellow, A. Gade, J. A. Tostevin +12
Simpson and Tostevin proposed that the width and shape of exclusive parallel momentum distributions of the A-2 residue in direct two-nucleon knockout reactions carry a measurable s…
Electromagnetic properties of O for benchmarking nuclear Hamiltonians
S. Heil, M. Petri, K. Vobig +25
The structure of exotic nuclei provides valuable tests for state-of-the-art nuclear theory. In particular electromagnetic transition rates are more sensitive to aspects of nuclear…
Detailed spectroscopy of Ca: A study of the decay of K
J. L. Pore, C. Andreoiu, J. K. Smith +33
We report on high-statistics data from the decay of the K = 2 ground state taken with the GRIFFIN spectrometer located at the TRIUMF-ISAC facility. In total,…
Single-Particle Structure of Neutron-Rich Sr Isotopes Via d( 94,95,96 Sr, p) Reactions
S. Cruz, K. Wimmer, P. C. Bender +32
The region around neutron number N = 60 in the neutron-rich Sr and Zr nuclei is one of the most dramatic examples of a ground state shape transition from (near) spherical below N =…
Inverse-kinematics proton scattering from S, P and the collapse of the major shell closure
L. A. Riley, D. Bazin, J. Belarge +21
Excited states of the neutron-rich isotopes S and P have been studied via inverse-kinematics proton scattering from a liquid hydrogen target, using the GRETINA…
Probing the role of proton cross-shell excitations in 70Ni using nucleon knockout reactions
B. Elman, A. Gade, R. V. F. Janssens +21
The neutron-rich Ni isotopes have attracted attention in recent years due to the occurrence of shape or configuration coexistence. We report on the difference in population of exci…
Constraints for stellar electron-capture rates on Kr via the Kr(,He)Br reaction and the implications for core-collapse supernovae
R. Titus, E. M. Ney, R. G. T. Zegers +20
In the late stages of stellar core-collapse, prior to core bounce, electron captures on medium-heavy nuclei drive deleptonization and simulations require the use of accurate reacti…
Single-particle shell strengths near the doubly magic nucleus Ni and the Ni(p,)Cu reaction rate in explosive astrophysical burning
D. Kahl, P. J. Woods, T. Poxon-Pearson +24
Angle-integrated cross-section measurements of the Ni(d,n) and (d,p) stripping reactions have been performed to determine the single-particle strengths of low-lying excited…
Constraining the Neutron Star Compactness: Extraction of the Al() Reaction Rate for the -Process
C. Wolf, C. Langer, F. Montes +33
The Al()Si reaction is among the most important reactions driving the energy generation in Type-I X-ray bursts. However, the present reaction-rate uncertainty li…
Experimental Constraint on Stellar Electron-Capture Rates from the reaction at 115 MeV/u
J. C. Zamora, R. G. T. Zegers, Sam M. Austin +22
The Gamow-Teller strength distribution from Sr was extracted from a experiment at 115 MeV/ to constrain estimates for the electron-capture rates…
Spectroscopy and lifetime measurements near the proton drip line: P
B. Longfellow, A. Gade, B. A. Brown +10
We report on the observation of excited states in the neutron-deficient phosphorus isotopes P via in-beam gamma-ray spectroscopy with both high-efficiency and high-res…
The structure of 70Fe: Single-particle and collective degrees of freedom
A. Gade, R. V. F. Janssens, J. A. Tostevin +16
Excited states in the neutron-rich \nuc{70}{Fe} nucleus were populated in a one-proton removal reaction from \nuc{71}{Co} projectiles at 87~MeV/nucleon. A new transition was observ…
High-resolution (p,t) reaction measurements as spectroscopic tests of {\it ab-initio} theory in the mid -shell
K. G. Leach, J. D. Holt, P. E. Garrett +18
Detailed spectroscopic measurements of excited states in Cr and Zn were performed using 24~MeV (p,t) transfer reactions on Cr and Zn, respectively. In t…
Shape Coexistence and Mixing of Low-Lying States in Sr
S. Cruz, P. C. Bender, R. Krücken +32
The low energy excited states in Sr are amongst the most prominent examples of shape coexistence across the nuclear landscape. In this work, the neutron $[2s_{1/…
A Search for States in Cr: Implications for the Superallowed -decay of Mn
K. G. Leach, P. E. Garrett, G. C. Ball +16
A CrCr two-neutron pickup reaction was performed using the Q3D magnetic spectrograph at the Maier-Leibnitz-Laboratorium in Garching, Germany. Excited states in…
Measurement of Lifetimes in 23Mg
O. S. Kirsebom, P. Bender, A. Cheeseman +22
Several lifetimes in 23Mg have been determined for the first time using the Doppler-shift attenuation method. A Monte Carlo simulation code has been written to model the gamma-ray…