activity
20062026
most citedDirect Evidence of Octupole Deformation in Neutron-Rich Ba

170 citations · 1.5k across the 47 of their papers we have counts for

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39 papers · 1 filter

nucl-ex2026

Direct measurement of F()Ne cross sections with ANASEN

K. S. Davis, J. C. Blackmon, C. M. Deibel +21

The F()Ne reaction may impact Asymptotic Giant Branch nucleosynthesis and helium burning on accreting white dwarfs. This reaction has never been directly measure…

nucl-ex2026

Observation of a dominant neutron configuration in the Si isomeric state

C. R. Hoffman, G. L. Wilson, J. Chen +8

An yrast, , spin-trap isomer has been previously identified in Si. The isomeric state decays predominantly via a hindered transition [B() = 0.0841(10)~W.u.…

nucl-ex2025★ 2 cited

Valence proton vacancy of the Si ground state

N. Watwood, C. R. Hoffman, B. P. Kay +22

The Si(He,)P reaction was studied in inverse kinematics at 6.3~MeV/. States in P corresponding to the proton single-particle orbitals were id…

nucl-ex2025★ 3 cited

Quenching of single-particle strength inferred from nucleon-removal transfer reactions on C

Y. C. Jiang, J. Chen, B. P. Kay +24

The difference in the proton and neutron separation energies () of the weakly bound C ground state is -19.86 MeV, an extreme value. Data from intermediate-energy heavy-i…

nucl-ex2024

Evolution of the nuclear spin-orbit splitting explored via the Si(,)Si reaction using SOLARIS

J. Chen, B. P. Kay, C. R. Hoffman +30

The spin-orbit splitting between neutron 1 orbitals at Si has been deduced using the single-neutron-adding (,) reaction in inverse kinematics with a beam of …

nucl-ex2023★ 8 cited

Direct Determination of Fission-Barrier Heights Using Light-Ion Transfer in Inverse Kinematics

S. A. Bennett, K. Garett, D. K. Sharp +16

We demonstrate a new technique for obtaining fission data for nuclei away from -stability. These types of data are pertinent to the astrophysical \textit{r-}process, crucial to…

nucl-ex2022★ 8 cited

Probing the quadrupole transition strength of 15C via deuteron inelastic scattering

J. Chen, B. P. Kay, T. L. Tang +22

Deuteron elastic scattering from 15C and inelastic scattering reactions to the first excited state of 15C were studied using a radioactive beam of 15C in inverse kinematics. The sc…

nucl-ex2022★ 22 cited

Quenching of Single-Particle Strength in A=15 Nuclei

B. P. Kay, T. L. Tang, I. A. Tolstukhin +17

Absolute cross sections for the addition of - and -wave neutrons to C and N have been determined simultaneously via the (,) reaction at 10 MeV/u. The diff…

nucl-ex2022

Evidence of a near-threshold resonance in B relevant to the -delayed proton emission of Be

Y. Ayyad, W. Mittig, T. Tang +27

A narrow near-threshold proton-emitting resonance (Ex = 11.4 MeV, J = 1/2 and = 4.4 keV) was directly observed in B via proton resonance scattering. This r…

nucl-ex2022★ 10 cited

First direct measurement of the N(,)O reaction relevant for core-collapse supernovae nucleosynthesis

H. Jayatissa, M. L. Avila, K. E. Rehm +10

Understanding the explosion mechanism of a core-collapse supernova (CCSN) is important to accurately model CCSN scenarios for different progenitor stars using model-observation com…

nucl-ex2021★ 1 cited

Study of the Isomeric State in N Using the N(,He) Reaction

T. L. Tang, C. R. Hoffman, B. P. Kay +19

The isomeric state of N was studied using the N(,He)~proton-removal reactions at \mbox{11.8~MeV/} in inverse kinematics. The N beam, of which…

nucl-ex2021★ 1 cited

Shapes, Softness and Non-Yrast Collectivity in 186W

V. S. Prasher, A. J. Mitchell, C. J. Lister +23

Non-yrast, excited states in neutron-rich W were populated via inelastic-scattering reactions using beams of Xe nuclei accelerated to 725 and 800 MeV. Levels popula…

nucl-ex2021

Neutron occupancies and single-particle energies across the stable tin isotopes

S. V. Szwec, D. K. Sharp, B. P. Kay +14

The occupancies and vacancies of the valence neutron orbitals across the stable tin isotopic chain from have been determined. These were inferred from the cross…

nucl-ex2020★ 4 cited

Consistency of nucleon-transfer sum rules in well-deformed nuclei

B. P. Kay, J. P. Schiffer, S. J. Freeman +8

Nucleon-transfer sum rules have been assessed via a consistent reanalysis of cross-section data from neutron-adding (,) and -removing (,) reactions on well-deformed iso…

nucl-ex2020★ 3 cited

Search for the intruder state in P

M. Salathe, H. L. Crawford, A. O. Macchiavelli +13

The excitation energy of deformed intruder states (specifically the 2p2h bandhead) as a function of proton number along is of interest both in terms of better understand…

nucl-ex2020★ 2 cited

Neutron-hole strength in N = 81 nuclei

A. M. Howard, S. J. Freeman, D. K. Sharp +7

A systematic study of neutron-hole strength in the N = 81 nuclei 137Ba, 139Ce, 141Nd and 143Sm is reported. The single-neutron removal reactions (p,d) and (3He,4He) were measured a…

nucl-ex2020★ 30 cited

First Exploration of Neutron Shell Structure Below Lead and Beyond

T. L. Tang, B. P. Kay, C. R. Hoffman +26

The nuclei below lead but with more than 126 neutrons are crucial to an understanding of the astrophysical -process in producing nuclei heavier than . Despite their im…

nucl-ex2018★ 14 cited

Probing the single-particle character of rotational states in F using a short-lived isomeric beam

D. Santiago-Gonzalez, K. Auranen, M. L. Avila +19

A beam containing a substantial component of both the , ns isomeric state of F and its , 109.77-min ground state has been utilized to study membe…

nucl-ex2017★ 28 cited

An experimental study of the rearrangements of valence protons and neutrons amongst single-particle orbits during double β decay in 100Mo

S. J. Freeman, D. K. Sharp, S. A. McAllister +9

The rearrangements of protons and neutrons amongst the valence single-particle orbitals during double β decay of 100Mo have been determined by measuring cross sections in (d,p), (p…

nucl-ex2017★ 2 cited

High- neutron excitations outside Xe

R. Talwar, B. P. Kay, A. J. Mitchell +8

The and strength at Xe, a single neutron outside the shell closure, has been determined using the Xe(,He)Xe react…

nucl-ex2017★ 119 cited

Direct Evidence for Octupole Deformation in Ba and the Origin of Large Moment Variations in Reflection-Asymmetric Nuclei

Brian Bucher, Shaofei Zhu, Ching-Yen Wu +24

Despite the more than one order of magnitude difference between the measured dipole moments in Ba and Ba, the strength of the octupole correlations in Ba ar…

nucl-ex2016★ 27 cited

Rearrangement of valence neutrons in the neutrinoless double- decay of Xe

S. V. Szwec, B. P. Kay, T. E. Cocolios +13

A quantitative description of the change in ground-state neutron occupancies between Xe and Ba, the initial and final state in the neutrinoless double- decay of…

nucl-ex2016★ 17 cited

Ordering of the and proton levels in light nuclei

C. R. Hoffman, B. P. Kay, J. P. Schiffer

A survey of the available single-proton data in nuclei, along with calculations using a Woods-Saxon potential, show that the ordering of the and pro…

nucl-ex2016★ 23 cited

Study of the astrophysically important and reactions

M. L. Avila, K. E. Rehm, S. Almaraz-Calderon +11

The NaMg and NaAl reactions are important for our understanding of the Al abundance in massive stars. The aim of this work is to report…