Publications (19)
A technique for the study of (p,n) reactions with unstable isotopes at energies relevant to astrophysics
P. Gastis, G. Perdikakis, G. P. A. Berg +20
We have developed and tested an experimental technique for the measurement of low-energy (p,n) reactions in inverse kinematics relevant to nuclear astrophysics. The proposed setup…
High-precision mass measurement of Cu and the redirection of the rp-process flow
A. A. Valverde, M. Brodeur, G. Bollen +14
We report the mass measurement of Cu, using the LEBIT 9.4T Penning trap mass spectrometer at the National Superconducting Cyclotron Laboratory at Michigan State University.…
First direct measurement of Ca single -decay Q value with the TITAN Penning trap
S. Kakkar, D. Perera, J. Ash +19
Neutrinoless double -decay (0), if observed, would provide unequivocal evidence of physics beyond the Standard Model. Ca is an interesting candidate system to st…
First Penning trap mass measurement of Ca
J. Surbrook, G. Bollen, M. Brodeur +13
Isobaric quintets provide the best test of the isobaric multiplet mass equation (IMME) and can uniquely identify higher order corrections suggestive of isospin symmetry breaking ef…
Precision mass measurements of neutron-rich scandium isotopes refine the evolution of and shell closures
E. Leistenschneider, E. Dunling, G. Bollen +17
We report high-precision mass measurements of Sc isotopes performed at the LEBIT facility at NSCL and at the TITAN facility at TRIUMF. Our results provide a substantial r…
First direct determination of the superallowed -decay -value for O
A. A. Valverde, G. Bollen, M. Brodeur +12
We report the first direct measurement of the superallowed Fermi -decay -value, the last of the so-called "traditional nine" superallowed Fermi -dec…
High-precision mass measurement of Si and a refined determination of the process at the waiting point
D. Puentes, Z. Meisel, G. Bollen +11
We report a high precision mass measurement of , performed with the LEBIT facility at the National Superconducting Cyclotron Laboratory. The atomic mass excess, $10\…
Direct determination of the La -decay value using Penning trap mass spectrometry
R. Sandler, G. Bollen, J. Dissanayake +10
Background: The understanding and description of forbidden decays provides interesting challenges for nuclear theory. These calculations could help to test underlying nuclear model…
Identification of a potential ultra-low Q value electron capture decay branch in Se via a precise Penning trap measurement of the mass of As
M. Horana Gamage, R. Bhandari, G. Bollen +8
Background: Low energy and electron capture (EC) decays are important systems in neutrino mass determination experiments. An isotope with an ultra-low Q value -decay to an…
Nuclear decay as a probe for physics beyond the Standard Model
M. Brodeur, N. Buzinsky, M. A. Caprio +43
This white paper was submitted to the 2022 Fundamental Symmetries, Neutrons, and Neutrinos (FSNN) Town Hall Meeting in preparation for the next NSAC Long Range Plan. We advocate to…
Investigation of potential ultra-low -value -decay candidates Sr and Ba using Penning trap mass spectrometry
R. Sandler, G. Bollen, N. D. Gamage +6
Background: Ultra-low -value -decays are interesting processes to study with potential applications to nuclear -decay theory and neutrino physics. While a number of pote…
High precision mass measurements of the isomeric and ground states of V: improving constraints on the IMME parameters of the A=44, quintet
D. Puentes, G. Bollen, M. Brodeur +16
The Isobaric Multiplet Mass Equation (IMME) has been successful at predicting the masses of isobaric analogue states in the same multiplet, while its coefficients are known to foll…
Mass Measurement of P to Constrain Type-I X-ray Burst Models and Validate the IMME for the A=27, T= Isospin Quartet
I. T. Yandow, A. Abdullah-Smoot, G. Bollen +12
Light curves are the primary observable of type-I x-ray bursts. Computational x-ray burst models must match simulations to observed light curves. Most of the error in simulated cur…
Investigating nuclear structure near and : Precision mass measurements of neutron-rich Ca, Ti and V isotopes
W. S. Porter, E. Dunling, E. Leistenschneider +32
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 appearanc…
High-precision mass measurement of Sn restores smoothness of the mass surface
C. M. Ireland, F. M. Maier, G. Bollen +20
As a step towards the ultimate goal of a high-precision mass measurement of doubly-magic Sn, the mass of Sn was measured at the Low Energy Beam and Ion Trap (LEBIT)…
Improved Nuclear Physics Near Refines Urca Neutrino Luminosities in Accreted Neutron Star Crusts
Zach Meisel, Alec Hamaker, G. Bollen +16
We performed a Penning trap mass measurement of at the National Superconducting Cyclotron Laboratory and NuShellX calculations of the and $^{62}{\rm…
Precision Mass Measurements of Neutron-Rich Co Isotopes Beyond N=40
C. Izzo, G. Bollen, M. Brodeur +12
The region near Z=28, N=40 is a subject of great interest for nuclear structure studies due to spectroscopic signatures in Ni suggesting a subshell closure at N=40. Trends i…
First direct Be electron capture -value measurement towards high-precision BSM neutrino physics searches
R. Bhandari, G. Bollen, T. Brunner +12
We report the first direct measurement of the nuclear electron capture (EC) decay -value of Be Li via high-precision Penning trap mass spectrometry (PT…
Measurements and computational analysis on the natural decay of Lu
F. G. A. Quarati, G. Bollen, P. Dorenbos +12
Mainly because of its long half-life and despite its scientific relevance, spectroscopic measurements of Lu forbidden -decays are very limited and lack formulation of s…