Zobrazeno 1 - 10
of 41
pro vyhledávání: '"E.J. Dowdy"'
Publikováno v:
Nuclear Instruments and Methods in Physics Research. 215:473-479
We demonstrate an improved technique for determining the multiplication of highly subcritical systems that uses the moments of the counting distribution from a neutron detector. In the investigation, the multiplications of each of 2, 3, and 4 kg part
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fe8bbbf6a32a454d67eccc84bbfc2fac
https://doi.org/10.1016/0167-5087(83)90481-7
https://doi.org/10.1016/0167-5087(83)90481-7
Publikováno v:
IEEE Transactions on Nuclear Science. 31:390-395
Monte Carlo calculations of a bismuth-germanate scintillator's efficiency agree closely with experimental measurements. For this comparison, we studied the absolute gamma-ray photopeak efficiency of a scintillator (7.62 cm long by 7.62 cm in diameter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d67a373f61a6fd3085b4efccbaf4126
https://doi.org/10.1109/tns.1984.4333284
https://doi.org/10.1109/tns.1984.4333284
Publikováno v:
Nuclear Instruments and Methods in Physics Research. 219:558-564
We report a new procedure for unfolding gamma-ray pulse-height distributions acquired with bismuth-germanate detectors. The equipment used for acquiring the distributions consists of a LeCroy 3500 data acquisition and analysis system and eight bismut
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::04a6e39c2f7e806940110814bda0afba
https://doi.org/10.1016/0167-5087(84)90230-8
https://doi.org/10.1016/0167-5087(84)90230-8
Autor:
Albert E. Evans, Edward R. Shunk, Calvin E. Moss, E.J. Dowdy, Arnold A. Robba, C.A. Goulding, Marcia C. Lucas
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 255:317-325
We have developed a fieldable instrumentation system for determining from measured flux spectra, both the neutron and gamma ray dose rate distributions associated with radioactive sources. This system includes the sensors, the computer-based data acq
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23e760173415faed00e9d2efd5315e16
https://doi.org/10.1016/0168-9002(87)91121-1
https://doi.org/10.1016/0168-9002(87)91121-1
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 242:480-483
Bismuth germanate (BGO) scintillators are preferable to NaI(Tl) scintillators or germanium detectors for some applications. We describe two systems based on BGO scintillators for applications in nuclear safeguards and health physics. The first system
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0f9661671d971212dae098e813600d89
https://doi.org/10.1016/0168-9002(86)90450-x
https://doi.org/10.1016/0168-9002(86)90450-x
Publikováno v:
IEEE Transactions on Nuclear Science. 29:843-846
A hand-held instrument for monitoring irradiated nuclear fuel inventories located in water-filled storage ponds has been developed. This instrument provides sufficient precise qualitative and quantitative information to be useful as a confirmatory te
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3713536342722e9fc1f82969a92d625e
https://doi.org/10.1109/tns.1982.4335972
https://doi.org/10.1109/tns.1982.4335972
Autor:
H.H. Hsu, E.J. Dowdy
Publikováno v:
Nuclear Instruments and Methods in Physics Research. 204:505-509
A fast an accurate interpolation method for determining gamma-ray attenuation coefficients has been developed. Based on a simple program that can be stored in a hand calculator, the method fits the attenuation coefficients as a function of gamma-ray
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e4c2b8fed4ea2a9f24b949b99802be6b
https://doi.org/10.1016/0167-5087(83)90079-0
https://doi.org/10.1016/0167-5087(83)90079-0
Publikováno v:
Analytica Chimica Acta. 136:277-284
The He(2 3 s ) afterglow technique for the determination of trace impurities in helium utilizes the bimolecular, energy-transfer reactions of electronically metastable atoms with impurities and spectroscopic detection of the resulting emissions from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6328f97d30bbe59a437f08cd06d7f612
https://doi.org/10.1016/s0003-2670(01)95387-5
https://doi.org/10.1016/s0003-2670(01)95387-5
Publikováno v:
Nuclear Instruments and Methods. 115:573-579
A neutron detection system has been constructed to measure neutron multiplicities from photoreactions. The detector consists of fifty-three 3 He proportional counters in a polythene cube 61 cm on a side. The detection efficiency for prompt neutrons f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed5c9116f6abc804d577d04d3c23f059
https://doi.org/10.1016/0029-554x(74)90263-8
https://doi.org/10.1016/0029-554x(74)90263-8
Publikováno v:
Nuclear Instruments and Methods. 114:71-74
An electronic circuit is described which, when presented with the discriminator-output pulses from a large, high-efficiency neutron-detection system, digitally sorts the number of pulses occurring in an adjustable count gate period and presents these
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::de5f66346c309351ee97ce08ec944e0b
https://doi.org/10.1016/0029-554x(74)90331-0
https://doi.org/10.1016/0029-554x(74)90331-0