Zobrazeno 1 - 10
of 118
pro vyhledávání: '"J.K. Whittaker"'
Autor:
D. L. Mohr, E. R. Lindstrom, N.D. Wilkin, J.E. Rose, R.G. Johnson, S. Penner, Mark Wilson, R. L. Ayres, Cha-Mei Tang, J. B. Broberg, R. I. Cutler, J.K. Whittaker, Phillip Sprangle, P. H. Debenham, B.C. Johnson
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 296:25-32
A free-electron-laser facility (FEL) is being constructed at the National Institute of Standards and Technology (NIST) in collaboration with the Naval Research Laboratory (NRL). The NIST-NRL FEL will provide a powerful, tunable light source for resea
Autor:
D. L. Mohr, R.G. Johnson, Mark Wilson, B.C. Johnson, R. I. Cutler, R.L. Ayres, J.K. Whittaker, J. B. Broberg, N.D. Wilkin, J.E. Rose, E. R. Lindstrom, P. H. Debenham
Publikováno v:
Proceedings of the Eleventh International Free Electron Laser Conference.
A free-electron-laser facility (FEL) is being constructed at the National Institute of Standards and Technology (NIST) in collaboration with the Naval Research Laboratory (NRL). The NIST-NRL FEL will provide a powerful, tunable light source for resea
Autor:
R. I. Cutler, Cha-Mei Tang, J.K. Whittaker, Phillip Sprangle, S. Penner, J.E. Rose, N.D. Wilkin, P. H. Debenham, R. L. Ayres, J. B. Broberg, E. R. Lindstrom, B.C. Johnson, R.G. Johnson, Mark Wilson, D. L. Mohr
Publikováno v:
Proceedings of the 1989 IEEE Particle Accelerator Conference, . 'Accelerator Science and Technology.
A free-electron laser (FEL) user facility is being constructed at the National Institute of Standards and Technology (NIST) in collaboration with the Naval Research Laboratory (NRL). The FEL, which will be operated as an oscillator, will be driven by
Akademický článek
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Akademický článek
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Autor:
J.K. Whittaker, Danny Tirosh
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 275:373-377
An amplifier circuit is described which uses digitally controlled means to remove the constant dc signal from the output of a photomultiplier photodetector used as a sensor in a pulse radiolysis measurement system. This enables the small (ca. 10%) ab
Publikováno v:
Nuclear Instruments and Methods. 23:141-146
The Harwell 30 MeV electron linear accelerator has been modified to provide electron bursts of 10 nsec duration at a repetition rate of 250 p.p.s. and peak current 0.2 A. A neutron time-of-flight spectrometer has been set up to cover the neutron ener
Autor:
J.K. Whittaker
Publikováno v:
Nuclear Instruments and Methods. 28:293-305
A timing system with a channel width of 10 nsec is completely described. The equipment is required to be compatible with a digital magnetic tape recording system 4–7 ) but may be used independently. Measurements of the complex energy spectra of pho
Publikováno v:
Nuclear Instruments and Methods. 104:131-136
A current monitor has been developed to measure the electron current pulse from the NBS 2 MeV pulsed electron generator. This monitor features low inductance and a risetime of the order of a hundred picoseconds, enabling it to faithfully reproduce hi
Publikováno v:
The International Journal of Applied Radiation and Isotopes. 20:493-498
The half-life of the 74 keV (52-) state of 239Np has been determined to be 1·380 nsec ± 0·032 nsec where the uncertainty represents the sum of estimated bounds to the systematic error, ±0·010 nsec, and twice the standard error, ±0·022 nsec. Th