Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Patent
1993-03-18
1994-08-23
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
250372, 2504581, 2504591, G01N 2162, G01N 2322
Patent
active
053409760
ABSTRACT:
A bandpass photon detector for inverse photoemission spectroscopy comprises a sample chamber and an analyzer chamber connected to a vacuum exhaust system, respectively; a photon detector connected to the analyzer chamber; the sample chamber and the analyzer chamber are switchably connected through a gate valve and provided with a sample transfer system for transferring a sample held at a center axial line of the sample chamber to a center portion of the analyzer chamber, the analyzer chamber is provided with an electron gun opposed to a sample positioned at a center where the sample is transferred and a photomultiplier comprising a low cut filter consisting of Cu-BeO at the opposite side of the electron gun, wherein a potassium chloride is deposited in a thickness of 500-1000 .ANG. on a first diode of said photomultiplier, thereby high inverse photoemission spectroscopy can be measured so as to analysis and estimation of semiconductors and magnetic material.
REFERENCES:
patent: 3033984 (1962-05-01), Fisher et al.
patent: 4330731 (1982-05-01), Garin et al.
patent: 4472634 (1984-09-01), Baptist et al.
patent: 4845361 (1989-06-01), Ibach et al.
patent: 4879915 (1989-10-01), Prince
patent: 5120965 (1992-06-01), Suga et al.
patent: 5202004 (1993-04-01), Kwak et al.
Review of Scientific Instruments, vol. 61, No. 9, Sep., 1990, pp. 2277-2288, P. D. Johnson et al., "Inverse Photoemission".
Patent Abstracts of Japan--JP 54 016 171, Feb. 6, 1979, (Hamamatsu).
Applied Optics, vol. 18, No. 4, Jul. 15, 1979, "Inexpensive Highly Efficient VUV Light Detectors", William H. Wing, p. 2346.
J. Phys. E. Sci. Instrum., vol. 18, 1985, "A Simple And Compact System For . . . Photoemission and Photoemission In The Vacuum Ultraviolet", N. Babbe et al., pp. 158-160, no month.
Rev. Sci. Instrum., vol. 58, No. 4, Apr. 1987, "Bandpass Photon Detector . . . Inverse Photoemission Spectroscopy", I. Schafer et al., pp. 710-711.
Nuclear Instruments and Methods In Physics Research, 1993 "Performance of the Inverse Photoemission . . . Narrow Bandwidth and High Sensitivity", Ueda et al., pp. 1-43, No month.
Rev. Sci. Instrum., vol. 64, No. 1, Jan., 1993, "Bandpass Photon Detector . . . Photoemission Spectroscopy", K. Yokoyama et al., pp. 87-90.
Ohta Toshiaki
Taniguchi Masaki
Allen Stephone B.
Hiroshima University
Nelms David C.
LandOfFree
Bandpass photon detector for inverse photoemission spectroscopy does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bandpass photon detector for inverse photoemission spectroscopy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bandpass photon detector for inverse photoemission spectroscopy will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-504415