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NSR database version of April 11, 2024.

Search: Author = L.Varriano

Found 9 matches.

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2024LO02      Phys.Rev.Lett. 132, 142502 (2024)

B.Longfellow, A.T.Gallant, G.H.Sargsyan, M.T.Burkey, T.Y.Hirsh, G.Savard, N.D.Scielzo, L.Varriano, M.Brodeur, D.P.Burdette, J.A.Clark, D.Lascar, K.D.Launey, P.Mueller, D.Ray, K.S.Sharma, A.A.Valverde, G.L.Wilson, X.L.Yan

Improved Tensor Current Limit from 8B β Decay Including New Recoil-Order Calculations

RADIOACTIVITY 8B(β+) [from 6Li(3He, n)8B, E not given]; measured decay products, Eα, Iα, Eβ, Iβ, α-α-β-coin.; deduced β-ν angular correlation coefficient impacted by 2+ intruder state, Gamow-Teller decays. Comparison with new ab initio symmetry-adapted no-core shell-model calculations, available data. The Beta-decay Paul Trap, Argonne National Laboratory, the ATLAS facility.

doi: 10.1103/PhysRevLett.132.142502
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2023GA11      Phys.Rev.Lett. 130, 192502 (2023)

A.T.Gallant, N.D.Scielzo, G.Savard, J.A.Clark, M.Brodeur, F.Buchinger, D.P.Burdette, M.T.Burkey, S.Caldwell, J.E.Crawford, A.Czeszumska, C.M.Deibel, J.Greene, D.Heslop, T.Y.Hirsh, A.F.Levand, B.Longfellow, G.E.Morgan, P.Mueller, R.Orford, S.Padgett, N.Paul, A.Perez Galvan, A.Reimer, R.Segel, K.S.Sharma, K.Siegl, L.Varriano, B.J.Zabransky

Angular Correlations in the β Decay of 8B: First Tensor-Current Limits from a Mirror-Nucleus Pair

RADIOACTIVITY 8B(β+); measured decay products, Eβ, Iβ; deduced the α-β-ν angular correlation in the Gamow-Teller β+ decay. The Beta-decay Paul Trap.

doi: 10.1103/PhysRevLett.130.192502
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Data from this article have been entered in the XUNDL database. For more information, click here.


2023HO14      Phys.Rev.Lett. 131, 262701 (2023)

D.E.M.Hoff, K.Kolos, G.W.Misch, D.Ray, B.Liu, A.A.Valverde, M.Brodeur, D.P.Burdette, N.Callahan, J.A.Clark, A.T.Gallant, F.G.Kondev, G.E.Morgan, M.R.Mumpower, R.Orford, W.S.Porter, F.Rivero, G.Savard, N.D.Scielzo, K.S.Sharma, K.Sieja, T.M.Sprouse, L.Varriano

Direct Mass Measurements to Inform the Behavior of 128mSb in Nucleosynthetic Environments

ATOMIC MASSES 128,128mSb; measured cyclotron frequencies; deduced mass excesses, isomer excitation energy. Comparison with AME2020, NUBASE2020, state-of-the-art shell model calculations using the GCN5082 interaction. The phase-imaging ion-cyclotron resonance (PI-ICR) technique with the Canadian Penning Trap (CPT) mass spectrometer at the Californium Rare Isotope Breeder Upgrade facility.

doi: 10.1103/PhysRevLett.131.262701
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Data from this article have been entered in the XUNDL database. For more information, click here.


2023LO04      Phys.Rev. C 107, L032801 (2023)

B.Longfellow, A.T.Gallant, T.Y.Hirsh, M.T.Burkey, G.Savard, N.D.Scielzo, L.Varriano, M.Brodeur, D.P.Burdette, J.A.Clark, D.Lascar, P.Mueller, D.Ray, K.S.Sharma, A.A.Valverde, G.L.Wilson, X.L.Yan

Determination of the 8B neutrino energy spectrum using trapped ions

RADIOACTIVITY 8B(β+) [from 3He(6Li, n)8B, E not given]; measured decay products, Eα, Iα, αα-coin, 8Be recoil energy; deduced 8Be final-state distribution (FSD) from 8B decay, neutrino energy spectra. Comparison to other experimental data. β-decay Paul trap (BPT) surrounded by double-sided silicon strip detectors (DSSDs) at ATLAS facility (ANL).

doi: 10.1103/PhysRevC.107.L032801
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Data from this article have been entered in the XUNDL database. For more information, click here.


2022BR05      Phys.Rev.Lett. 128, 212503 (2022)

L.J.Broussard, J.L.Barrow, L.DeBeer-Schmitt, T.Dennis, M.R.Fitzsimmons, M.J.Frost, C.E.Gilbert, F.M.Gonzalez, L.Heilbronn, E.B.Iverson, A.Johnston, Y.Kamyshkov, M.Kline, P.Lewiz, C.Matteson, J.Ternullo, L.Varriano, S.Vavra

Experimental Search for Neutron to Mirror Neutron Oscillations as an Explanation of the Neutron Lifetime Anomaly

NUCLEAR REACTIONS B, C(n, X), E cold; measured reaction products, En, In. 1NN; deduced neutron transmission, neutron conversions, increase the apparent neutron lifetime. The Spallation Neutron Source, the National Institute of Standards and Technology Beam Lifetime experiment.

doi: 10.1103/PhysRevLett.128.212503
Citations: PlumX Metrics


2022BU16      Phys.Rev.Lett. 128, 202502 (2022)

M.T.Burkey, G.Savard, A.T.Gallant, N.D.Scielzo, J.A.Clark, T.Y.Hirsh, L.Varriano, G.H.Sargsyan, K.D.Launey, M.Brodeur, D.P.Burdette, E.Heckmaier, K.Joerres, J.W.Klimes, K.Kolos, A.Laminack, K.G.Leach, A.F.Levand, B.Longfellow, B.Maass, S.T.Marley, G.E.Morgan, P.Mueller, R.Orford, S.W.Padgett, A.Perez Galvan, J.R.Pierce, D.Ray, R.Segel, K.Siegl, K.S.Sharma, B.S.Wang

Improved Limit on Tensor Currents in the Weak Interaction from 8Li β Decay

RADIOACTIVITY 8Li(β-); measured decay products, Eβ, Iβ; deduced tensor currents in the low-energy regime by examining the β-ν correlation of trapped 8Li ions with the Beta-decay Paul Trap. Comparison with the standard model prediction.

doi: 10.1103/PhysRevLett.128.202502
Citations: PlumX Metrics

Data from this article have been entered in the XUNDL database. For more information, click here.


2022OR02      Phys.Rev. C 105, L052802 (2022)

R.Orford, N.Vassh, J.A.Clark, G.C.McLaughlin, M.R.Mumpower, D.Ray, G.Savard, R.Surman, F.Buchinger, D.P.Burdette, M.T.Burkey, D.A.Gorelov, J.W.Klimes, W.S.Porter, K.S.Sharma, A.A.Valverde, L.Varriano, X.L.Yan

Searching for the origin of the rare-earth peak with precision mass measurements across Ce-Eu isotopic chains

ATOMIC MASSES 152,153,154Ce, 152,153,154,156,157Pr, 157Nd, 161Pm, 163,165Eu; measured cyclotron frequency; deduced mass excess, solar abundances of rare-earth elements. Comparison to AME2016 and AME2020 evaluations, previous experimental data and calculations using Markov chain Monte Carlo (MCMC) technique. Canadian Penning Trap (CPT) with low-energy ion beams from the Californium Rare Isotope Breeder Upgrade(CARIBU) facility at Argonne National Laboratory. Systematics of CPT mass-measurements for Ce, Pr, Nd, Pm, Sm, Eu (Z=58-63).

doi: 10.1103/PhysRevC.105.L052802
Citations: PlumX Metrics


2022SA23      Phys.Rev.Lett. 128, 202503 (2022)

G.H.Sargsyan, K.D.Launey, M.T.Burkey, A.T.Gallant, N.D.Scielzo, G.Savard, A.Mercenne, T.Dytrych, D.Langr, L.Varriano, B.Longfellow, T.Y.Hirsh, J.P.Draayer

Impact of Clustering on the 8Li β Decay and Recoil Form Factors

RADIOACTIVITY 8Li(β-), 8Be(2α); analyzed available data; calculated 8Be low-lying 0+ states, unprecedented constraints on recoil corrections, strong correlation between them and the 8Li ground state quadrupole moment using large-scale ab initio calculations.

doi: 10.1103/PhysRevLett.128.202503
Citations: PlumX Metrics


2019BU23      Hyperfine Interactions 240, 36 (2019)

M.T.Burkey, G.Savard, A.Gallant, N.D.Scielzo, J.A.Clark, T.Y.Hirsh, D.P.Burdette, E.Heckmaier, J.Klimes, K.Kolos, S.T.Marley, G.E.Morgan, R.Orford, S.Padgett, J.Pierce, R.Segel, Ku.S.Sharma, L.Varriano, B.S.Wang

Precision β - ν correlation measurements with the Beta-decay Paul Trap

RADIOACTIVITY 8Li(β-); measured decay products, Eβ, Iβ; deduced correlations. Comparison with simulations.

doi: 10.1007/s10751-019-1580-0
Citations: PlumX Metrics


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