PADC Detected External Neutron Field by Nuclear Tracks at RFX-mod

Authors

  • W. Gonzalez Consorzio RFX, EURATOM-ENEA Association, Corso Stati Uniti 4, 35127 Padova, Italy
  • G. Espinosa Instituto de Física, universidad Nacional Autónoma de México, Circuito de la Investigación Cientifica, Ciudad universitaria, 04520 México, D.F.
  • M. Zuin Consorzio RFX, EURATOM-ENEA Association, Corso Stati Uniti 4, 35127 Padova, Italy
  • G. Viesti Dipartimento di Fisica ed Astronomia, università di Padova,Italy
  • F. Pino universidad Simón Bolívar, Caracas 1080A, Venezuela
  • J. I. Golzarri Instituto de Física, universidad Nacional Autónoma de México, Circuito de la Investigación Cientifica, Ciudad universitaria, 04520 México, D.F.
  • E. Martinez Consorzio RFX, EURATOM-ENEA Association, Corso Stati Uniti 4, 35127 Padova, Italy
  • J. Bermudez INFN, laboratori Nazionali di legnaro, 35020 legnaro, Italy
  • D. Moro INFN, laboratori Nazionali di legnaro, 35020 legnaro, Italy
  • J. K. Palfalvi Centre for energy Research of the hungarian Academy of Sciences. POB 49, h-1525 Budapest. hungary
  • L. Sajo-Bohus universidad Simón Bolívar, Caracas 1080A, Venezuela

DOI:

https://doi.org/10.15415/jnp.2014.21006

Keywords:

Neutron diagnostics, Plasma, Track detectors

Abstract

Measured neutron signals relevant for plasma diagnostics on Reversed Field pinch eXperiment, RFX-mod, are obtained by nuclear track methodology with PADC-NtD’s. this technique provides the external neutron field values around the RFX-mod installation during pulsed operation. Charged particles from (n, p) and (n, α) reactions are related to formed latent tracks. these are etched in a thermoregulated water bath with a 6.25M, KOh solution at 60oC. Observed tracks were analyzed to determine track density from which neutron fluence spatial values should be derived. Results indicate that the neutron density in the surrounding environment change at most 40%. the epithermal component is 60% higher than that corresponding to the thermal region. the estimated neutron fluence for the whole experiment is 7.5×1010 neutrons cm2/s.

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References

F. Castillo, J. Herrera, J. Rangel, J.I. Golzarri, G. espinosa, Nuclear tracks methodology for the analysis of isotropic components in a plasma focus neutron yield. Revista Mexicana de Física. S-53, 61-64, (2007).

F. Castillo, G. Espinosa, J.I. Golzarri, D. Osorio, J. Rangel, P. Reyes, J. herrera, Fast neutron dosimetry using CR-39 track detectors with polyethylene as radiator. Radiation Measurements. 50, 71-73, (2013). http://dx.doi.org/10.1016/j.radmeas.2012.09.007

R. Felix-Bautista, estudio de la evolucion de la formacion de trazas producidas por particulas alfas en CR-39 mediante microscopia de fuerza atómica. M.Sc. thesis. universidad Nacional Autonoma de Mexico, DF Mexico (2013).

J. Herrera, F. Castillo, I. Gamboa, J. Rangel, J.I. Golzarri, G. espinosa, Review of results from the FN-II dense plasma focus machine, e-Proceedings of the 12th ICPP, (2004). http://hal.ccsd.cnrs.fr/ICPP2004/en/;

J.K. Pálfalvi, Fluence and dose of mixed space radiation by SSNtDs: achievements and constraints. Rad. Meas. 45, 1568-1573 (2009). http://dx.doi.org/10.1016/j. radmeas.2010.06.053

J. Palfalvi, l. Sajo-Bohus, use of SStNDs in Neutron Beam Dosimetry 28, 483-488 (1997).

J. Palfalvi, l. Sajo-Bohus, M. Balasko, Realistic neutron spectra for radiation protection and other applications at AeRI, Budapest. Proceedings of the International Workshop on Neutron Field Spectrometry in Science, technology and Radiation Protection, Pisa (2000).

J.K. Palfalvi, l. Sajo-Bohus, J. Szabó, J. Pálfalvi Jr Study on etching of PADC track etch detector by an alpha source, presented at 25th International Conference on Nuclear tracks in Solids. September 4-9, 2011 Puebla, México (not published) (2011).

P. Martin et al., Overview of the RFX fusion science Program, Nuclear Fusion 51, 094023 (2011). http://dx.doi.org/10.1088/0029-5515/51/9/094023

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Published

2014-08-20

How to Cite

(1)
Gonzalez, W. .; Espinosa, G. .; Zuin, M. .; Viesti, G. .; Pino, F. .; Golzarri, J. I. .; Martinez, E. .; Bermudez, J. .; Moro, D. .; Palfalvi, J. K. .; Sajo-Bohus, L. . PADC Detected External Neutron Field by Nuclear Tracks at RFX-Mod. J. Nucl. Phy. Mat. Sci. Rad. A. 2014, 2, 83-90.

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