scholarly journals Neutron and Gamma-Ray Radiation Environments for the Annular Core Research Reactor

2018 ◽  
pp. 23-34
Author(s):  
Edward J. Parma
Keyword(s):  
Research Reactor ◽  
Gamma Ray

Neutron and Gamma-Ray Scattering at the University of Missouri Research Reactor Center

1994 ◽  
Vol 376 ◽  
Author(s):  
James J. Rhyne
Keyword(s):  
Research Reactor ◽  
Gamma Ray ◽  
Inelastic Neutron Scattering ◽  
Collaborative Work ◽  
Inelastic Neutron ◽  
University Of Missouri ◽  
Under Construction ◽  
The University ◽  
Reactor Center ◽  
Ray Scattering

ABSTRACTThe neutron and gamma-ray scattering facilities at the University of Missouri Research Reactor Center include six elastic and inelastic neutron scattering instruments currently in operation and three additional ones under construction. A gamma-ray diffraction and quasi-elastic spectrometer are also available. The Center has no formal user program, but encourages external collaborative work particularly that involves graduate student thesis research.

scholarly journals Measurement of the 13C(n,$\gamma$) thermal cross section via neutron irradiation and AMS

2019 ◽  
Vol 55 (11) ◽  
Author(s):  
T. Wright ◽  
S. Bennett ◽  
S. Heinitz ◽  
U. Köster ◽  
R. Mills ◽  
...  
Keyword(s):  
Activation Analysis ◽  
Cross Section ◽  
Research Reactor ◽  
Gamma Ray ◽  
Beam Line ◽  
Prompt Gamma ◽  
High Flux ◽  
Accelerator Mass Spectrometer ◽  
Thermal Cross Section ◽  
Good Agreement

Abstract.Ampoules of amorphous 99.5% enriched 13C were irradiated at the PF1b neutron beam line at the high-flux ILL research reactor in order to produce 14C atoms. The precise ratio of 14C/13C was subsequently measured at the VERA Accelerator Mass Spectrometer, allowing the 13C(n,$ \gamma$γ)14C thermal cross section to be accurately determined. This is the first measurement of this cross section at sub-eV energies via this technique and the result of $ 1.52 \pm 0.07$1.52±0.07 mb for the thermal cross section is in good agreement with other recent measurements which were performed via Prompt Gamma-ray Activation Analysis.

Ionization Chambers to Determine Neutron and Gamma-Ray Kerma in a Research Reactor

2019 ◽  
Vol 66 (10) ◽  
pp. 2160-2169
Author(s):  
Jeff Radtke ◽  
Paul Brooks ◽  
Mark Anderson ◽  
Wesley Culberson ◽  
Paul Deluca ◽  
...  
Keyword(s):  
Research Reactor ◽  
Gamma Ray ◽  
Ionization Chambers

scholarly journals Prompt Fission Gamma-Ray Measurements at UML Research Reactor

2020 ◽  
Vol 242 ◽  
pp. 01009
Author(s):  
Razvan Stanescu ◽  
Hadrick Green ◽  
Toby Morris ◽  
Gencho Rusev ◽  
Marian Jandel
Keyword(s):  
Gamma Rays ◽  
Research Reactor ◽  
Gamma Ray ◽  
Fission Neutron ◽  
Pulse Shape Discrimination ◽  
Prompt Gamma ◽  
Fission Reaction ◽  
Induced Fission ◽  
Enriched Uranium ◽  
Prompt Fission

Neutron-induced fission of 235U was studied at the thermal column of the UMass Lowell 1 MW Research Reactor. A collimated, 2.25-inch diameter beam of thermal neutrons with the flux of ~5x105 n/cm2/sec induced fission reaction on a plate of low-enriched uranium with the areal density ~25 mg/cm2 of 235U. We have used the prompt fission-neutron tagging method to identify the fission reaction in the off-line analysis. The method employs the pulse-shape discrimination of neutrons and gamma-ray events in stilbene scintillator and enables identification of coincidence events of prompt fission gamma-rays and prompt fission neutrons in coincidence time intervals less than 20-30 ns. The prompt gamma-ray radiation was detected using two co-linear NaI(Tl) detectors. The measured spectra of prompt-fission gamma rays between 150 keV and 6 MeV are presented. The results from these initial measurements demonstrate the feasibility of the experimental method. Future measurements with extended arrays of detectors are planned.

Generation of Pressure Distribution Inside a Decay Tank in a Research Reactor Using CFD

2013 ◽  
Author(s):  
Seong Hoon Kim ◽  
Kyoungwoo Seo ◽  
Dae-young Chi ◽  
Juhyeon Yoon
Keyword(s):  
Research Reactor ◽  
Gamma Ray ◽  
Cooling System ◽  
Perforated Plate ◽  
Reactor Core ◽  
Perforated Plates ◽  
Pump Operation ◽  
The Core ◽  
Cooling Loop ◽  
Irradiation Device

The Primary Cooling System (PCS) of a research reactor circulates coolant to remove the heat produced in the fuel or irradiation device. The core outlet coolant contains many kinds of radionuclides because it passes the reactor core [1]. As N-16 among them emits a very hard gamma ray, it not only causes radiation damage to some components but also requires very heavy shielding of the primary cooling loop. Since its half-life is 7.13s, its level can be effectively lowered by installing a decay tank including an internal structure to provide a transit time [2]. To ensure that the N-16 activity decreases enough before the coolant leaves the heavily shielded decay tank room, perforated plates are installed inside the decay tank. The perforated plates are designed to disturb and delay the PCS flow. Normally, when a flow from a relative narrow inlet nozzle goes out to an enlarged tank, it becomes a complex turbulent flow inside the tank. In addition, the PCS flow is frequently changed from zero to a normal flow rate owing to the research reactor characteristics. Thus, the integrity of the perforated plate shall be verified with the pump operation and shutdown condition.

Ionization Chambers to Measure Neutron and Gamma-Ray Kerma in a Research Reactor

2017 ◽  
Author(s):  
Jeff Radtke ◽  
Paul DeLuca ◽  
Laura Bartol ◽  
Andrew Maile ◽  
Robert Agasie ◽  
...  
Keyword(s):  
Research Reactor ◽  
Gamma Ray ◽  
Ionization Chambers

A low cost neutron capture prompt gamma-ray analysis facility at a research reactor

1982 ◽  
Vol 72 (1-2) ◽  
pp. 287-294 ◽  
Author(s):  
J. D. Jones ◽  
M. A. Ludington ◽  
W. L. Rigot
Keyword(s):  
Neutron Capture ◽  
Research Reactor ◽  
Gamma Ray ◽  
Low Cost ◽  
Prompt Gamma

Nondestructive burnup measurements by gamma-ray spectroscopy on spent fuel elements of the RP-10 research reactor

2011 ◽  
Vol 53 (4) ◽  
pp. 344-353 ◽  
Author(s):  
Mariano Vela Mora ◽  
Alberto Gallardo Padilla ◽  
José Luis Castro Palomino ◽  
Luís Antônio Albiac Terremoto
Keyword(s):  
Research Reactor ◽  
Gamma Ray ◽  
Spent Fuel ◽  
Gamma Ray Spectroscopy ◽  
Fuel Elements
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