Zobrazeno 1 - 10
of 89
pro vyhledávání: '"R H Hughes"'
Publikováno v:
Applied optics. 20(8)
Spectrograms from 2200 to 20 A of optical emissions produced by a simple lamp using fast (3-10-keV) electron impact on tungsten and tantalum targets are presented. The lamp dissipated up to 5 kW/cm(2) on the target surface, simultaneously cleaning th
Autor:
Michael Kelly, G. A. C. Jones, R. H. Hughes, H. Asahi, J. E. F. Frost, M. Tewordt, R. T. Syme, V. J. Law, A. C. Churchill, David A. Ritchie
Publikováno v:
Applied Physics Letters. 60:595-597
Resonant tunneling in GaAs‐AlGaAs triple barrier diodes is studied as a function of the diode diameter between d=8 μm and d=100 nm. We observe, only in the very small diodes, a novel spikelike fine structure in the current‐voltage characteristic
Publikováno v:
The American journal of gastroenterology. 87(8)
We reviewed the records of 20 liver transplant patients who underwent 28 procedures [endoscopic retrograde cholangiopancreatography (ERCP)] to rule out biliary obstruction, treat bile leaks, dilate and/or stent strictures, or remove stones and debris
Publikováno v:
Physical review. B, Condensed matter. 45(20)
A time-of-flight technique has been used to measure the remnant charge of laser-produced pulses of multicharged C k+ (k=1-4), Al m+ (m=3-6), and Pb n+ (n=2-6) ions incidenton a clean amorphous Au surface under UHV conditions. Remnant charge states we
Autor:
E M Love, K H Shwe, S J Urbaniak, R Main, N Fraser, J K M Duguid, I M Bromilow, B A Van Dijk, C J M De Man, V A J M Kunst, W G Murphy, S Ghosh, R H Hughes, J I O Craig, I A Greer
Publikováno v:
BMJ. 309:805-805
Publikováno v:
Physical Review B. 36:9003-9010
Autor:
R. H. Hughes
Publikováno v:
Journal of Applied Physics. 59:1866-1871
Results of a time‐resolved study of optical emissions from high‐current relativistic (6.5 MeV) electron beams propagating in air at a pressure of 150 mTorr are presented. The emissions included N+ lines at λλ4803, 4630, 4552, and 4530 A. Data w
Publikováno v:
Journal of Applied Physics. 53:6628-6633
Results of transporting a laser‐generated plasma through magnetic fields are reported. Plasma plumes have been generated in strong magnetic fields, in directions both transverse and parallel to the field. Collective effects are demonstrated by the
Autor:
R. H. Hughes, H. Y. Chen
Publikováno v:
IEEE Transactions on Consumer Electronics. :185-192
Color Picture Tube electron gun designers were faced with a new challenge when two industry-wide trends started in 1972. They were: a) the development of the self-convergence precision inline (PI) system to replace the conventional delta gun structur
Publikováno v:
Atherosclerosis. 23:155-176
The regression of atherosclerotic lesions in Rhesus monkeys was evaluated by means of a low-fat, low-cholesterol diet with or without N-γ-phenylpropyl-N-benzyloxy acetamide (W-1372). Moderate to severe aortic and coronary atherosclerosis was induced