scholarly journals MicroMegas-based detectors for time-of-flight measurements of neutron-induced reactions

2020 ◽  
Vol 239 ◽  
pp. 17007
Author(s):  
F. Gunsing ◽  
F. Belloni ◽  
E. Berthoumieux ◽  
M. Diakaki ◽  
E. Dupont ◽  
...  
Keyword(s):  
Cross Section ◽  
Reaction Cross Section ◽  
Time Of Flight ◽  
Reaction Cross ◽  
Drift Region ◽  
Particle Detection ◽  
Radiation Resistant ◽  
Neutron Time ◽  
Low Mass ◽  
Flight Measurements

MicroMegas detectors are versatile gaseous detectors which are used for ionizing particle detection. A MicroMegas detector consists of two adjacent gas-filled volumes. One volume acts as a drift region with an electric field operating in the ionization chamber regime, the second volume is the amplification region acting as a parallel-plate avalanche counter. The use of the microbulk technique allows the production of thin, radiation resistant, and low-mass detector with a highly variable gain. Such MicroMegas detectors have been developed and used in combination with neutron time-of-flight measurements for in-beam neutron-flux monitoring, fission and light-charged particle reaction cross section measurements, and for neutron-beam imaging. An overview of MicroMegas detectors for neutron detection and neutron reaction cross section measurements and related results and developments will be presented.

Reaction cross section and product ion time‐of‐flight measurements for collisions of N+ and N+2 with CO2 at suprathermal energies

1990 ◽  
Vol 93 (11) ◽  
pp. 7780-7786 ◽  
Author(s):  
James A. Gardner ◽  
Rainer A. Dressler ◽  
Richard H. Salter ◽  
Edmond Murad
Keyword(s):  
Cross Section ◽  
Reaction Cross Section ◽  
Time Of Flight ◽  
Reaction Cross ◽  
Flight Measurements

scholarly journals Preparation and characterization of 10B targets at JRC-Geel

2020 ◽  
Vol 229 ◽  
pp. 03005
Author(s):  
David Vanleeuw ◽  
Jan Heyse ◽  
Goedele Sibbens ◽  
Mariavittoria Zampella
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Time Of Flight ◽  
Fission Cross Section ◽  
Nuclear Data ◽  
Areal Density ◽  
Reaction Cross ◽  
Neutron Time

Measurements of neutron-induced cross sections to generate nuclear data are a core activity of the JRC-Directorate G Standards for Nuclear Safety, Security and Safeguards unit in Geel. Thin 10B layers are of great importance in this activity as they are used to measure the absolute neutron flux in the beam using the standard 10B(n,α)7Li reaction cross-section as a reference. After a period of reduced activity and in line with a renewed interest for nuclear data, the demand for high quality 10B targets increased. In this paper we describe the design and features of a new e-beam evaporator specifically customized for the preparation of boron targets as replacement of the old dysfunctional equipment. Several 10B targets of varying thicknesses were prepared and characterized as part of the factory acceptance tests and implementation in the JRC-Geel target preparation laboratory. Differential substitution weighing was applied for mass determination and in order to calibrate the thickness monitor. Comparative time-of-flight measurements relative to 10B and 235U standard targets were conducted at the GELINA neutron time-of-flight facility at the JRC-Geel site as second methodology for the determination of 10B areal density. The morphology of the layers was assessed by means of Scanning Electron Microscopy (SEM). The determination of impurities was realized by means of Energy Dispersive X-ray (EDX). Finally, two boron targets were prepared in the frame of the measurement of the neutron induced fission cross-section of 230Th at the n_TOF neutron time-of-flight facility at CERN.

An Am/Be neutron source and its use in integral tests of differential neutron reaction cross-section data

2010 ◽  
Vol 68 (9) ◽  
pp. 1656-1661 ◽  
Author(s):  
M.S. Uddin ◽  
M.R. Zaman ◽  
S.M. Hossain ◽  
I. Spahn ◽  
S. Sudár ◽  
...  
Keyword(s):  
Cross Section ◽  
Neutron Source ◽  
Reaction Cross Section ◽  
Reaction Cross ◽  
Cross Section Data ◽  
Section Data ◽  
Neutron Reaction

Total reaction cross section forC12+C12in the vicinity of the Coulomb barrier

1980 ◽  
Vol 22 (6) ◽  
pp. 2462-2464 ◽  
Author(s):  
W. Treu ◽  
H. Fröhlich ◽  
W. Galster ◽  
P. Dück ◽  
H. Voit
Keyword(s):  
Cross Section ◽  
Coulomb Barrier ◽  
Reaction Cross Section ◽  
Reaction Cross ◽  
Total Reaction Cross Section ◽  
Total Reaction

Variation of a Chemical Reaction Cross Section with Energy

1960 ◽  
Vol 32 (3) ◽  
pp. 940-941 ◽  
Author(s):  
E. F. Greene ◽  
R. W. Roberts ◽  
J. Ross
Keyword(s):  
Cross Section ◽  
Chemical Reaction ◽  
Reaction Cross Section ◽  
Reaction Cross

Measurement of theAm241(n,2n)reaction cross section using the activation method

2006 ◽  
Vol 73 (6) ◽  
Author(s):  
G. Perdikakis ◽  
C. T. Papadopoulos ◽  
R. Vlastou ◽  
A. Lagoyannis ◽  
A. Spyrou ◽  
...  
Keyword(s):  
Cross Section ◽  
Reaction Cross Section ◽  
Reaction Cross ◽  
Activation Method

Total proton reaction cross section of copper at 9 MeV

1962 ◽  
Vol 36 ◽  
pp. 511-516 ◽  
Author(s):  
Richard F. Carlson ◽  
Robert M. Eisberg ◽  
Richard H. Stokes ◽  
Thomas H. Short
Keyword(s):  
Cross Section ◽  
Reaction Cross Section ◽  
Reaction Cross
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