Nuclear Fission Investigation with Twin Ionization Chamber

Journal Article · Tue Nov 29 00:00:00 EST 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3659935· OSTI ID:21612255

Zeynalova, O; Zeynalov, Sh ^[1]; Nazarenko, M ^[2]; Hambsch, F -J; Oberstedt, S ^[3]

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1. JINR-Joint Institute for Nuclear Research, Dubna, Moscow region (Russian Federation)
2. Moscow State Institute of Radioengineering and Automation, 78 Vernadski Avenue, 119454 Moscow (Russian Federation)
3. EC-JRC Institute for Reference Materials and Measurements, Retieseweg 111, 2440 Geel (Belgium)

The purpose of the present paper was to report the recent results, obtained in development of digital pulse processing mathematics for prompt fission neutron (PFN) investigation using twin ionization chamber (TIC) along with fast neutron time-of-flight detector (ND). Due to well known ambiguities in literature (see refs. [4, 6, 9 and 11]), concerning a pulse induction on TIC electrodes by FF ionization, we first presented detailed mathematical analysis of fission fragment (FF) signal formation on TIC anode. The analysis was done using Ramo-Shockley theorem, which gives relation between charged particle motion between TIC electrodes and so called weighting potential. Weighting potential was calculated by direct numerical solution of Laplace equation (neglecting space charge) for the TIC geometry and ionization, caused by FF. Formulae for grid inefficiency (GI) correction and digital pulse processing algorithms for PFN time-of-flight measurements and pulse shape analysis are presented and discussed.

• OSTI ID: 21612255
• Journal Information: AIP Conference Proceedings, Vol. 1404, Issue 1; Conference: AMiTaNS'11: 3. international conference on application of mathematics in technical and natural sciences, Albena (Bulgaria), 20-25 Jun 2011; Other Information: DOI: 10.1063/1.3659935; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALGORITHMS
DATA PROCESSING
FAST NEUTRONS
FISSION
FISSION FRAGMENTS
FISSION NEUTRONS
INTEGRAL EQUATIONS
IONIZATION CHAMBERS
LAPLACE EQUATION
NEUTRON DETECTION
NEUTRON DETECTORS
NUMERICAL SOLUTION
PULSE SHAPERS
SPACE CHARGE
TIME-OF-FLIGHT METHOD
BARYONS
DETECTION
DIFFERENTIAL EQUATIONS
ELECTRONIC CIRCUITS
ELEMENTARY PARTICLES
EQUATIONS
FERMIONS
HADRONS
MATHEMATICAL LOGIC
MATHEMATICAL SOLUTIONS
MEASURING INSTRUMENTS
NEUTRONS
NUCLEAR FRAGMENTS
NUCLEAR REACTIONS
NUCLEONS
PARTIAL DIFFERENTIAL EQUATIONS
PROCESSING
PULSE CIRCUITS
RADIATION DETECTION
RADIATION DETECTORS
SIGNAL CONDITIONERS