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Dive into the research topics where D. J. H. Howie is active.

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Featured researches published by D. J. H. Howie.


Journal of Physics B | 1996

Measurement of wavelengths in helium-like sulphur

D. J. H. Howie; J.D. Silver; E. G. Myers

We have used photographic spectroscopy of a beam - foil source to measure the vacuum ultraviolet 1s2s - 1s2p transition wavelengths in helium-like sulphur. The results are A and A, respectively. These measurements, together with our earlier measurements in helium-like silicon and phosphorus, are compared with other precision measurements for Z = 14 to 18, and with recent relativistic and quantum electrodynamic calculations.


Physics Letters A | 1994

Measurement of 1s2s 3S1–1s2p 3P2,0 wavelengths in heliumlike argon

William A. Hallett; D. J. H. Howie; J.D. Silver; D. D. Dietrich

Abstract We have used photographic spectroscopy of a recoil-ion source to perform a measurement of the vacuum ultra-violet 1s2s 3S1–1s2p 3P2,0 transition wavelenghts in heliumlike argon. The results are 559.95 ± 0.02 A and 661.58 ± 0.02 A respectively. This measurement constitutes a sensitive test of current relativistic and quantum electrodynamic calculations.


Physical Review A | 1998

MEASUREMENTS OF THE 1S2S 1S0-1S2P 3P1,0 TRANSITIONS IN HELIUMLIKE NITROGEN

James K. Thompson; D. J. H. Howie; E. G. Myers


Physical Review Letters | 1996

Hyperfine-Induced 1s2s 1S0-1s2p 3P0 Transition and Fine-Structure Measurement in Heliumlike Nitrogen

E. G. Myers; D. J. H. Howie; James K. Thompson; J.D. Silver


Physical Review A | 1994

Measurement of 1[ital s]2[ital s] [sup 3][ital S][sub 1]--1[ital s]2[ital p] [sup 3][ital P][sub 2,0] wavelengths in heliumlike silicon

D. J. H. Howie; William A. Hallett; E.G. Myers; D. D. Dietrich; J.D. Silver


Physical Review A | 1993

Measurement of 1s2s 3S1-1s2p 3P2,0 wavelengths in heliumlike silicon.

D. J. H. Howie; William A. Hallett; Edmund G. Myers; Daniel D. Dietrich; J.D. Silver


Physical Review Letters | 1995

Measurement of the 1s2s1S0-1s2p3P1 interval in heliumlike nitrogen.

E. G. Myers; James K. Thompson; E. P. Gavathas; N. R. Claussen; J. D. Silver; D. J. H. Howie


Physical Review A | 1995

Measurement of 1s2s 3S1-1s2p 3P2,0 wavelengths in heliumlike phosphorus.

D. J. H. Howie; J.D. Silver; E. G. Myers


Physical Review Letters | 1996

Hyperfine-induced 1{ital s}2{ital s} ¹{ital S}â-1{ital s}2{ital p} ³{ital P}â transition and fine-structure measurement in heliumlike nitrogen

E. G. Myers; D. J. H. Howie; John R. Thompson; Joel Silver


Archive | 1996

Hyperfine Induced J=O -> J'=O Transition and Precision Fine Structure Measurement in N^5+

E. G. Meyers; D. J. H. Howie; Jan Thompson; J. D. Silver

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E. G. Myers

Florida State University

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James K. Thompson

University of Colorado Boulder

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E. P. Gavathas

Florida State University

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N. R. Claussen

Florida State University

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D. D. Dietrich

Lawrence Livermore National Laboratory

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Daniel D. Dietrich

Lawrence Berkeley National Laboratory

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