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NSR database version of April 27, 2024.

Search: Author = C.Howard

Found 7 matches.

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2016DA05      Phys.Rev. C 94, 025803 (2016)

S.Daigle, K.J.Kelly, A.E.Champagne, M.Q.Buckner, C.Iliadis, C.Howard

Measurement of the E^c.m._r = 259 keV resonance in the ¹⁴N(p, g)¹⁵O reaction

NUCLEAR REACTIONS ¹⁴N(p, γ)¹⁵O, E=270-310 keV; measured Eγ, Iγ using an HPGe detector and APEX array of NaI(Tl) detectors at LENA-TUNL facility. ¹⁵O; deduced levels, resonances, γ-ray branching ratios from the decay of the 259-keV proton resonance, resonance strength. Comparison with previous experimental data.

doi: 10.1103/PhysRevC.94.025803
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2238. Data from this article have been entered in the XUNDL database. For more information, click here.

2015BU02      Phys.Rev. C 91, 015812 (2015)

M.Q.Buckner, C.Iliadis, K.J.Kelly, L.N.Downen, A.E.Champagne, J.M.Cesaratto, C.Howard, R.Longland

High-intensity-beam study of ¹⁷O(p, γ)¹⁸F and thermonuclear reaction rates for ¹⁷O + p

NUCLEAR REACTIONS ¹⁷O(p, γ), E=170-530 keV; measured Eγ, Iγ, γγ-coin at LENA-TUNL facility. ¹⁸F; deduced levels, J, π, resonances, γ branching ratios from resonance capture, and from direct capture as function of E(p), resonance strengths, total S(E) factors. ¹⁷O(p, γ), (p, α); deduced thermonuclear reaction rates. Comparison with previous results.

doi: 10.1103/PhysRevC.91.015812
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2155. Data from this article have been entered in the XUNDL database. For more information, click here.

2013CE04      Phys.Rev. C 88, 065806 (2013)

J.M.Cesaratto, A.E.Champagne, M.Q.Buckner, T.B.Clegg, S.Daigle, C.Howard, C.Iliadis, R.Longland, J.R.Newton, B.M.Oginni

Measurement of the E^r_c.m.=138 keV resonance in the ²³Na(p, γ)²⁴Mg reaction and the abundance of sodium in AGB stars

NUCLEAR REACTIONS ²³Na(p, γ)²⁴Mg, E<500 keV; measured Eγ, Iγ, on resonance γγ-coin spectra using ECRIS ion source at LENA-TUNL accelerator facility; deduced upper limit on the strength of the 138-keV proton resonance, probability density of the final ²³Na abundance, (p, α)/(p, γ) reaction rate ratio, correlations between the final abundance of ²³Na in AGB stars and the rate-variation factor. ²³Na(p, α)²⁰Ne, E at T₉=0.010-10.0; deduced reaction rates for 138-keV resonance. Performed one-zone post-processing nucleosynthesis calculations.

doi: 10.1103/PhysRevC.88.065806
Citations: PlumX Metrics
Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2076.

2013PO05      Phys.Rev. C 88, 015808 (2013)

I.Pogrebnyak, C.Howard, C.Iliadis, R.Longland, G.E.Mitchell

Mean proton and α-particle reduced widths of the Porter-Thomas distribution and astrophysical applications

NUCLEAR REACTIONS ²⁷Al, ³¹P, ³⁵Cl, ³⁹K(p, α); ³³S, ³⁵Cl, ³⁹K, ⁴²Ca, ⁴⁴Ca, ⁴⁶Ti, ⁴⁸Ti, ⁵⁰Cr, ⁵²Cr, ⁵⁴Cr, ⁵⁴Fe, ⁵⁶Fe, ⁶⁰Ni, ⁶⁴Zn, ⁶⁶Zn(p, p); analyzed previous experimental resonance data collected at TUNL facility. ²⁸Si, ³²S, ³⁴Cl, ³⁶Ar, ⁴⁰Ca, ^43,45Sc, ^47,49V, ^51,53,55Mn, ^55,57Co, ⁶¹Cu, ⁶⁵Ge, ⁶⁷Ga; deduced mean reduced proton width and α widths. Porter-Thomas distributions. ⁴⁰Ti(α, γ)⁴⁴Ti; deduced thermonuclear reaction rates based on mean reduced α widths. Impact on ⁴⁴Ti abundance in core-collapse novae.

doi: 10.1103/PhysRevC.88.015808
Citations: PlumX Metrics

2012BU16      Phys.Rev. C 86, 065804 (2012)

M.Q.Buckner, C.Iliadis, J.M.Cesaratto, C.Howard, T.B.Clegg, A.E.Champagne, S.Daigle

Thermonuclear reaction rate of ¹⁸O(p, γ)¹⁹F

NUCLEAR REACTIONS ¹⁸O(p, γ)¹⁹F, E=95 keV; measured Eγ, Iγ, γγ-coin; deduced resonance strength, direct capture S factor using LENA facility. Improved thermonuclear reaction rates.

doi: 10.1103/PhysRevC.86.065804
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC1964. Data from this article have been entered in the XUNDL database. For more information, click here.

2003AI06      J.Radioanal.Nucl.Chem. 257, 45 (2003)

P.L.Airey, C.J.Howard

Comment on a general property of radionuclides

NUCLEAR STRUCTURE Z=0-114; analyzed T_1/2 distribution.

doi: 10.1023/A:1024780823246
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1986WO01      Phys.Rev. C33, 677 (1986)

F.K.Wohn, J.C.Hill, C.B.Howard, K.Sistemich, R.F.Petry, R.L.Gill, H.Mach, A.Piotrowski

Shape Coexistence and Level Structure of ¹⁰⁰Zr from Decay of the Low-Spin Isomer of ¹⁰⁰Y

NUCLEAR STRUCTURE ¹⁰⁰Zr, ⁹⁸Sr, ¹⁰²Mo; calculated B(E2), ratios, transition density; deduced shape coexistent deformed, spherical band mixing.

RADIOACTIVITY ¹⁰⁰Y(β^-) [from ²³⁵U(n, F), ¹⁰⁰Sr(β^--decay)]; measured T_1/2, Eγ, Iγ, γγ-coin, I(ce); deduced log ft. ¹⁰⁰Zr deduced levels, J, π, B(E2), transition density. ¹⁰⁰Y level deduced possible J, π. ¹⁰⁰Sr(β^-); measured T_1/2.

doi: 10.1103/PhysRevC.33.677
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Note: The following list of authors and aliases matches the search parameter C.Howard: , C.B.HOWARD, C.J.HOWARD