scholarly journals Investigation of (n,2n) reactions using the high energy neutron facility at NCSR “Demokritos”

2019 ◽  
Vol 24 ◽  
pp. 117
Author(s):  
R. Vlastou ◽  
A. Kalamara ◽  
M. Kokkoris ◽  
M. Serris ◽  
N. Patronis ◽  
...  
Keyword(s):  
Neutron Beam ◽  
Reaction Cross Section ◽  
High Energy ◽  
Reaction Cross ◽  
Activation Technique ◽  
Flux Variation ◽  
High Energy Neutron ◽  
Foil Activation ◽  
Energy Neutron ◽  
Neutron Facility

In the high energy neutron facility at the 5.5MV tandem T11/25 Accelerator of NCSR "Demokritos", the neutron beam is produced by means of the 3H(d,n)4He reaction in the energy range ~15-21 MeV and at a flux of the order of 105 -106 n/cm2s. The beam has been characterized by means of the NeuSDesc and MCNP5 Monte Carlo simulations along with the multiple foil activation technique at various neutron energies. The neutron flux has been deduced using reference reactions, such as the 27Al(n,α) reaction, while the flux variation of the neutron beam was monitored by using a BF3 detector. After the characterization, the neutron beam has been used for (n,2n) reaction cross section measurements on Hf, Au and Ir isotopes via the activation technique. The irradiations were carried out at 15.3 and 17.1 MeV.

scholarly journals High-energy neutron facility at the Athens Tandem Accelerator NCSR “Demokritos”

2019 ◽  
Vol 21 ◽  
pp. 123 ◽  
Author(s):  
R. Vlastou ◽  
M. Anastasiou ◽  
A. Kalamara ◽  
M. Diakaki ◽  
M. Kokkoris ◽  
...  
Keyword(s):  
Cross Section ◽  
Reaction Cross Section ◽  
Neutron Fluence ◽  
High Energy ◽  
Reaction Cross ◽  
Activation Technique ◽  
Tandem Accelerator ◽  
Foil Activation ◽  
Energy Neutron ◽  
Neutron Facility

In the 5.5 MV tandem T11/25 Accelerator Laboratory of NCSR “Demokritos” monoenergetic neutron beams have been produced in the energy range ∼16–19 MeV using a new Ti-tritiated target of 373 GBq activity, by means of the 3H(d,n)4He reaction. The corresponding beam energies obtained from the accel- erator, were 0.8–3.7 deuterons. The maximum flux has been determined to be of the order of 106 n/s·cm2, implementing reference reactions. An investigation of the energy dependence of the neutron fluence has been carried out with the multiple foil activation technique. The beam has been used for the measurement of (n,2n) reaction cross section on several isotopes at 16.7 and 17 MeV.

scholarly journals Neutron induced reactions at the Athens Tandem accelerator NCSR "Demokritos"

2019 ◽  
Vol 14 ◽  
pp. 1
Author(s):  
R. Vlastou ◽  
C. T. Papadopoulos ◽  
M. Kokkoris ◽  
G. Perdikakis ◽  
S. Galanopoulos ◽  
...  
Keyword(s):  
Energy Range ◽  
Energy Dependence ◽  
Neutron Beam ◽  
Neutron Fluence ◽  
Liquid Scintillator ◽  
Activation Technique ◽  
Flux Variation ◽  
Tandem Accelerator ◽  
Foil Activation ◽  
Neutron Facility

The neutron facility at the 5.5 MV Tandem Tll/25 accelerator of NCSR "Demokritos" has been used to produce monoenergetic neutron beams in the energy range 120-650 keV and 4-11.5 MeV via the 7Li(p,n) and 2H(d,n) reactions, respectively. The flux variation of the neutron beam was monitored by using a BF3 detector, while an investigation of the energy dependence of the neutron fluence has been carried out with a liquid scintillator BC501A detector as well as with the multiple foil activation technique. The 232Th(n,2n)231Th and 241Am(n,2n)240Am as well as (n,2n), (n,p) and (η,α) reactions on natural Ge and Hf isotopes, have been investigated from threshold up to 11.5 MeV, by using the activation method.

Characterisation of the high-energy neutron beam at iThemba LABS

2010 ◽  
Vol 45 (10) ◽  
pp. 1342-1345 ◽  
Author(s):  
M. Mosconi ◽  
E. Musonza ◽  
A. Buffler ◽  
R. Nolte ◽  
S. Röttger ◽  
...  
Keyword(s):  
Neutron Beam ◽  
High Energy ◽  
High Energy Neutron ◽  
Energy Neutron

A comparison of two methods ofin vivodosimetry for a high energy neutron beam

1990 ◽  
Vol 63 (750) ◽  
pp. 476-481 ◽  
Author(s):  
S. W. Blake ◽  
D. E. Bonnett ◽  
J. Finch
Keyword(s):  
Neutron Beam ◽  
High Energy ◽  
High Energy Neutron ◽  
Energy Neutron

Preclinical studies with the Faure high energy neutron facility: response of pig skin to fractionated doses of fast neutrons (66 MeVp → Be)

1990 ◽  
Vol 18 (2) ◽  
pp. 147-154 ◽  
Author(s):  
G. Blekkenhorst ◽  
A. Hendrikse ◽  
C. Kent ◽  
D. Jones ◽  
G.J.M.J. van den Aardweg
Keyword(s):  
High Energy ◽  
Fast Neutrons ◽  
Preclinical Studies ◽  
Pig Skin ◽  
High Energy Neutron ◽  
Energy Neutron ◽  
Neutron Facility

scholarly journals Biological characterization of a high energy neutron beam for radiation therapy

Cancer ◽  
1974 ◽  
Vol 34 (1) ◽  
pp. 54-64 ◽  
Author(s):  
James L. Montour ◽  
John D. Wilson ◽  
Charles C. Rogers ◽  
Richard B. Theus ◽  
Frank H. Attix
Keyword(s):  
Radiation Therapy ◽  
Neutron Beam ◽  
High Energy ◽  
Biological Characterization ◽  
High Energy Neutron ◽  
Energy Neutron

Patient Dosimetry and Staff Protection at the Clatterbridge High Energy Neutron Facility

1988 ◽  
Vol 23 (1-4) ◽  
pp. 369-372 ◽  
Author(s):  
S.W. Blake ◽  
J. Finch ◽  
D.E. Bonnett ◽  
J.E. Shaw
Keyword(s):  
High Energy ◽  
High Energy Neutron ◽  
Energy Neutron ◽  
Staff Protection ◽  
Neutron Facility
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