Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Ronald F. Fleming"'
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 624:180-183
A geometry independent method has been derived for calculating the ratio of the spectrum averaged cross-sections for the reactions 115 In(γ, γ′) 115m In and 113 In(γ, γ′) 113m In in the energy region of interest 300–500 keV. The technique i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2741ecfa4e3ee28eac166d308c06b489
https://doi.org/10.1016/j.nima.2010.08.001
https://doi.org/10.1016/j.nima.2010.08.001
Autor:
Menno Blaauw, Ronald F. Fleming
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 505:306-310
In the “dual spectrum” approach to non-Poisson counting statistics of gamma-ray spectra obtained with loss-free or zero-dead-time (ZDT) counting, an uncorrected spectrum acquired in parallel is employed to obtain the uncertainties in the dead-tim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f5683668afa8cb2fabba5a8c121dfb36
https://doi.org/10.1016/s0168-9002(03)01074-x
https://doi.org/10.1016/s0168-9002(03)01074-x
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 248:309-313
One of the most recent developments in equipment for high and/or varying count rates, as encountered in the gamma-ray spectrometry needed for INAA via short-lived radionuclides, is the advent of EG&G Ortec's DSPECplus™. This all-in-one apparatus pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5dd1ca87e6157c3f5b3b868618d5aba8
https://doi.org/10.1023/a:1010603403264
https://doi.org/10.1023/a:1010603403264
Measurement of neutron and γ-ray intensity distributions with an optical fiber-scintillator detector
Autor:
D. Stuenkel, Ronald F. Fleming, Chizuo Mori, Seiji Shiroya, T. Iguchi, Katsuhei Kobayashi, Hiroshi Miyahara, Akira Uritani, Glenn F. Knoll, Yuni K. Dewaraja, E. Takada
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 422:129-132
On the tip of an optical fiber, a very small amount of ZnS(Ag) scintillator mixed with neutron converter and adhesive paste was painted, which can be inserted into a narrow space and moved by a fiber-driving unit controlled with a personal computer.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::74a17b46ee306c1103e042dccad1b712
https://doi.org/10.1016/s0168-9002(98)01088-2
https://doi.org/10.1016/s0168-9002(98)01088-2
Autor:
Martin A. Ludington, Yuni K. Dewaraja, Chizuo Mori, K. Hara, Ronald F. Fleming, N. Hayashi, Hiroshi Miyahara
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 422:493-497
The emission probabilities of the 171, 844 and 1014 keV γ-rays for 27 Mg were determined to be 0.0086(2), 0.7180(8) and 0.2820(8) by two methods, to measure the disintegration rate and γ-rays intensities and to determine the relative intensity for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::84f148ed762c88c416ac2aca3e9bcd73
https://doi.org/10.1016/s0168-9002(98)01072-9
https://doi.org/10.1016/s0168-9002(98)01072-9
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 398:276-286
A method for the high-accuracy determination of the relative full energy peak efficiency is established. Radionuclides that emit at least two gamma-ray lines for which the relative intensity can be found (from the decay scheme) to much better than ±
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f0005a0aff46143add63ef36a1f31c56
https://doi.org/10.1016/s0168-9002(97)00811-5
https://doi.org/10.1016/s0168-9002(97)00811-5
Publikováno v:
Nuclear Science and Engineering. 126:314-323
A new measurement-based method has been developed to determine the photofission contribution to measured responses of fission reactions in a mixed radiation field of neutrons and photons. Using thi...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2afebf7e72cbe4a94c5cffa429aa9466
https://doi.org/10.13182/nse97-a24483
https://doi.org/10.13182/nse97-a24483
Publikováno v:
IEEE Transactions on Nuclear Science. 42:649-652
This paper demonstrates simultaneous two-dimensional mapping of multiple radionuclides which are present in a sample. The technique, which is based on position sensitive beta-gamma coincidence measurement, is applicable to most radionuclides that dec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad1213cc72fa8b2d9da930832e64fbcc
https://doi.org/10.1109/23.467897
https://doi.org/10.1109/23.467897
Publikováno v:
Journal of Radioanalytical and Nuclear Chemistry. 257:489-491
In the course of making high-accuracy measurements of arsenic, we found that the most recently published and compiled half-life of 76As did not agree with our data as well as the earlier accepted value. To redetermine this parameter, 76As sources wer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ca4a11433e5eb2e9fccba441b874b606
https://doi.org/10.1023/a:1025415926281
https://doi.org/10.1023/a:1025415926281
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 353:425-428
Isomeric activities were induced in indium by gamma irradiation in three different gamma fields, through the reactions 115 In(γ, γ′) 115m In and 113 In(γ, γ′) 113m In. The irradiation fields were (i) the 15 kCi 60 Co source available in the U
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c89da105e7942201645067a53af0dc3c
https://doi.org/10.1016/0168-9002(94)91690-x
https://doi.org/10.1016/0168-9002(94)91690-x