Results 161 to 170 of about 360 (202)
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Transient response of cobalt self-powered neutron detectors
Nuclear Instruments and Methods, 1970Abstract In the TRIGA reactor in Vienna the transient response of a self-powered detector with cobalt emitter has been studied.
H. Böck, M. Stimler, O. Strindehag
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Self powered neutron detectors as in-core detectors for Sodium-cooled Fast Reactors
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2017Abstract Neutron flux monitoring system forms an integral part of the design of a Generation IV sodium cooled fast reactor. Diverse possibilities of detector system installation must be studied for various locations in the reactor vessel in order to detect any perturbations in the core.
V. Verma +5 more
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Charge Released by Beta-Decaying Self-Powered Neutron Detectors
Nuclear Science and Engineering, 1976An equation for the total charge available for release from unit length of an emitter undergoing beta-particle decay in a self-powered neutron detector is derived. This derivation is based on a calculational model of the current response of a self-powered neutron detector developed earlier.
H. D. Warren, N. L. Snidow
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The Epithermal Component in the Neutron Response of Various Self-Powered Detectors
IEEE Transactions on Nuclear Science, 1980The response of self-powered detectors are characterized by a sensitivity indicating the induced current per unit flux per unit length. However, a reactor neutron spectrum consists of a thermal and epithermal component and we show that the current produced by epithermal neutrons in Pt, Co and Rh detectors is a significant fraction of the total response.
N. P. Goldstein, C. L. Chen, W. H. Todt
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Theoretical evaluation of a self-powered neutron detector with a fissile emitter
Nuclear Instruments and Methods, 1978Abstract The application of enriched uranium as an emitter material for a self-powered neutron detector has been investigated theoretically. It was found that such an emitter should increase the detector sensitivity considerably compared to other conventional materials such as Co, Er or Pt.
E. Balcar, H. Böck, F. Hahn
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An optical self-powered neutron detector using nuclear pumping
Proceedings of 1994 IEEE Nuclear Science Symposium - NSS'94, 2002Based on the nuclear pumped laser technique, an optical self-powered neutron detector is now being investigated, in the JAERI Advanced Science Research Center. The first experiment has been made using lasing gas cells with three components of He-3 gas (1140 mmHg), Ne gas (588 mmHg) and H/sub 2/ gas (206 mmHg or 412 mmHg), or Ar gas (206 mmHg) instead ...
M. Nakazawa +5 more
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Dynamic Compensation Methods for Self-Powered Neutron Detectors
Nuclear Science and Engineering, 1994Among the three digital dynamic compensation methods that are developed for or applied to the rhodium self-powered neutron detector–the dominant pole Tustin method of the core operating limit super...
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Model for Calculating Prompt-Response Self-Powered Neutron Detectors
Nuclear Science and Engineering, 1974A sophisticated model is presented for the calculation of prompt-response self-powered neutron (SPN) detectors used for stationary as well as nonstationary neutron flux measurements in nuclear reac...
W. Jaschik, W. Seifritz
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Irradiation tests of prototype self-powered gamma and neutron detectors
2011 2nd International Conference on Advancements in Nuclear Instrumentation, Measurement Methods and their Applications, 2011In the framework of the SCK·CEN-CEA Joint Instrumentation Laboratory, we are developing and optimizing a self-powered detector for selective in-core monitoring of the gamma field. Several prototypes with bismuth emitters were developed and tested in a pure gamma field (the PAGURE gamma irradiation facility at CEA) and in mixed neutron and gamma fields (
L. Vermeeren +5 more
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Neutron Sensitivity of Prompt-Response Self-Powered Neutron Detectors and the Interval Rule
1989This paper is devoted to the calculation of thermal sth and epithermal sepi sensitivities of cobalt prompt-response Self-Powered Neutron Detectors (SPNDs). The thermal sensitivity was obtained for a Maxwellian neutron field, and the effect of scattering on the self-shielding correction was taken into consideration in the second-collision approximation.
J Molina Avila, M Carmo Lopes
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