Effect of anisotropic D–D fusion neutron emission on counter calibration using activation techniques

Author(s):  
B Wolle ◽  
G Beikert ◽  
F Gadelmeier
Nukleonika ◽  
2017 ◽  
Vol 62 (1) ◽  
pp. 17-22 ◽  
Author(s):  
Slawomir Jednorog ◽  
Ewa Laszynska ◽  
Barbara Bienkowska ◽  
Adam Ziolkowski ◽  
Marian Paduch ◽  
...  

Abstract The power output of plasma experiments and fusion reactors is a crucial parameter. It is determined by neutron yields that are proportional and directly related to the fusion yield. The number of emitted neutrons should be known for safety reasons and for neutron budget management. The PF-1000 is the large plasma facility based on the plasma focus phenomenon. PF-1000 is operating in the Institute of Plasma Physics and Laser Microfusion in Warsaw. Neutron yield changes during subsequent pulses, which is immanent part of this type device and so it must be monitored in terms of neutron emission. The reference diagnostic intended for this purpose is the silver activation counter (SAC) used for many years. Our previous studies demonstrated the applicability of radio-yttrium for neutron yield measurements during the deuterium campaign on the PF-1000 facility. The obtained results were compared with data from silver activation counter and shown linear dependence but with some protuberances in local scale. Correlation between results for both neutron monitors was maintained. But the yttrium monitor registered the fast energy neutron that reached measurement apparatus directly from the plasma pinch. Based on the preliminary experiences, the yttrium monitor was designed to automatically register neutron-induced yttrium activity. The MCNP geometrical model of PF-1000 and yttrium monitor were both used for calculation of the activation coefficient for yttrium. The yttrium monitor has been established as the permanent diagnostic for monitoring fusion reactions in the PF-1000 device.


2006 ◽  
Vol 56 (S2) ◽  
pp. B243-B249 ◽  
Author(s):  
M. Scholz ◽  
B. Bieńkowska ◽  
I. M. Ivanova-Stanik ◽  
L. Karpiński ◽  
M. Paduch ◽  
...  

2021 ◽  
Vol 28 (6) ◽  
pp. 062708
Author(s):  
D. Klir ◽  
A. V. Shishlov ◽  
V. A. Kokshenev ◽  
R. K. Cherdizov ◽  
J. Cikhardt ◽  
...  
Keyword(s):  

2010 ◽  
Vol 50 (3) ◽  
pp. 035008 ◽  
Author(s):  
E. Ronchi ◽  
S. Conroy ◽  
E. Andersson Sundén ◽  
G. Ericsson ◽  
M. Gatu Johnson ◽  
...  

1986 ◽  
Vol 95 (1-4) ◽  
pp. 285-289
Author(s):  
D. L. Smith ◽  
J. W. Meadows ◽  
P. T. Guenther

2017 ◽  
Vol 31 (23) ◽  
pp. 1750168 ◽  
Author(s):  
F. Cardone ◽  
G. Albertini ◽  
D. Bassani ◽  
G. Cherubini ◽  
E. Guerriero ◽  
...  

A mole of Mercury was suitably treated by ultrasound in order to generate in it the same conditions of local Lorentz invariance violation that were generated in a sonicated cylindrical bar of AISI 304 steel and that are the cause of neutron emission during the sonication. After 3 min, part of the mercury turned into a solid material which turned out to contain isotopes having a different mass (higher and lower) with respect to the isotopes already present in the initial material (mercury). These transformations in the atomic weight without gamma production above the background are brought about during Deformed Space–Time reactions. We present the results of the analyses performed on samples taken from the transformation product. The analyses have been done in two groups, the first one using five different analytical techniques: ICP-OES, XRF, ESEM-EDS, ICP-MS, INAA. In the second group of analyses, we used only two techniques: INAA and ICP-MS. The second group of analyses confirmed the occurring of the transformations in mercury.


Sign in / Sign up

Export Citation Format

Share Document