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Featured researches published by John H. T. Burke.


Physical Review C | 2006

Half-life ofO14

John H. T. Burke; Paul Andrew Vetter; S. J. Freedman; B. K. Fujikawa; W. T. Winter

We have measured the half-life of 14 O, a superallowed (0 + ! 0 + ) � decay isotope. The 14 O was produced by the 12 C( 3 He,n) 14 O reaction using a carbon aerogel target. A low-energy ion beam of 14 O was mass separated and implanted in a thin beryllium foil. The beta particles were counted with plastic scintillator detectors. We find �1/2 = 70.696 ± 0.037 s. This result is 2.0� higher than an average value from six earlier experiments, but agrees more closely with the most recent previous measurment.


Physical Review C | 2006

Half-life of 14 O

John H. T. Burke; Paul Andrew Vetter; S. J. Freedman; B. K. Fujikawa; W. T. Winter

We have measured the half-life of 14 O, a superallowed (0 + ! 0 + ) � decay isotope. The 14 O was produced by the 12 C( 3 He,n) 14 O reaction using a carbon aerogel target. A low-energy ion beam of 14 O was mass separated and implanted in a thin beryllium foil. The beta particles were counted with plastic scintillator detectors. We find �1/2 = 70.696 ± 0.037 s. This result is 2.0� higher than an average value from six earlier experiments, but agrees more closely with the most recent previous measurment.


Physical Review Letters | 2008

Lifetime Measurement of the First Excited 2+ State in C16

M. Wiedeking; P. Fallon; A. O. Macchiavelli; J. Gibelin; M. Shamsuzzoha Basunia; R. M. Clark; M. Cromaz; M.-A. Deleplanque; S. Gros; Henrik B. Jeppesen; P. T. Lake; I. Y. Lee; L. G. Moretto; J. Pavan; L. Phair; E. Rodriguez-Vietiez; L. A. Bernstein; D. L. Bleuel; John H. T. Burke; S. R. Lesher; B.F. Lyles; Nicholas D. Scielzo


Physical Review C | 2006

Deducing the 237U(n,f) cross-section using the Surrogate Ratio Method

John H. T. Burke; L. A. Bernstein; J. E. Escher; L. Ahle; J. A. Church; F. S. Dietrich; Kenton J. Moody; E. B. Norman; L. Phair; P. Fallon; R. M. Clark; M Delaplanque; M. Descovich; M. Cromaz; I.Y. Lee; A. O. Macchiavelli; M. A. McMahan; L.G. Moretto; E. Rodriguez-Vieitez; F. S. Stephens


Physical Review C | 2009

Relative U(n,) and (n,f) cross sections from U(d,p) and (d,pf)

J. M. Allmond; C. W. Beausang; L. A. Bernstein; D. L. Bleuel; John H. T. Burke; J. E. Escher; S. R. Lesher; Nicholas D. Scielzo; L. Phair; H. Jeppesen; M. A. McMahan; J. O. Rasmussen; Kenneth E. Evans; B. L. Goldblum; Robert Hatarik; Mathis Wiedeking


Physical Review Letters | 2008

Lifetime Measurement of the First Excited 2{sup +} State in C

M. Wiedeking; P. Fallon; A. O. Macchiavelli; J. Gibelin; M. Shamsuzzoha Basunia; R. M. Clark; M. Cromaz; M.-A. Deleplanque; S. Gros; Henrik B. Jeppesen; P. T. Lake; I. Y. Lee; L. G. Moretto; J. Pavan; L. Phair; E. Rodriguez-Vietiez; L. A. Bernstein; D. L. Bleuel; John H. T. Burke; S. R. Lesher


Physical Review C | 2006

Half-life of ¹⁴O

John H. T. Burke; Stuart J. Freedman; W. T. Winter; Paul Andrew Vetter; Brian Fujikawa


Physical Review C | 2006

Deducing the U237(n,f) cross section using the surrogate ratio method

John H. T. Burke; L. A. Bernstein; J. E. Escher; L. Ahle; J.A. Church; Frank S. Dietrich; Kenton J. Moody; E. B. Norman; L. Phair; P. Fallon; R. M. Clark; M.-A. Deleplanque; M. Descovich; M. Cromaz; I. Y. Lee; A. O. Macchiavelli; M. A. McMahan; L. G. Moretto; E. Rodriguez-Vieitez; F. S. Stephens; H. Ai; Ch. Plettner; C. W. Beausang; B. P. Crider


Physical Review C | 2006

Half-life of {sup 14}O

John H. T. Burke; S. J. Freedman; W. T. Winter; Paul Andrew Vetter; B. K. Fujikawa


Physical Review C | 2006

Half-life of O14

John H. T. Burke; Paul A. Vetter; Stuart J. Freedman; Brian Fujikawa; W. T. Winter

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Paul Andrew Vetter

Lawrence Berkeley National Laboratory

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W. T. Winter

Lawrence Berkeley National Laboratory

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L. A. Bernstein

Lawrence Livermore National Laboratory

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L. Phair

Lawrence Berkeley National Laboratory

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A. O. Macchiavelli

Lawrence Berkeley National Laboratory

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B. K. Fujikawa

Lawrence Berkeley National Laboratory

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Brian Fujikawa

Lawrence Berkeley National Laboratory

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M. Cromaz

Lawrence Berkeley National Laboratory

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P. Fallon

Lawrence Berkeley National Laboratory

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R. M. Clark

Lawrence Berkeley National Laboratory

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