Neutron energy distribution and temporal correlations with hard x-ray emission from a hundreds of joules plasma focus device

José Moreno, Felipe Veloso, Cristian Pavez, Ariel Tarifeño-Saldivia, Daniel Klir, Leopoldo Soto

Resultado de la investigación: Article

5 Citas (Scopus)

Resumen

In this paper, experimental measurements of neutron energy distribution and hard x-ray emission from a 320J deuterium operated plasma focus device are presented. Temporal measurements of neutron and hard x-ray emission are studied using different arrangements of six scintillator-photomultiplier detector systems, located either radially or axially with respect to the focus symmetry axis. The axial-to-radial ratio of both total neutron yield and neutron energies indicates anisotropic emission, which is consistent with a 100 keV kinetic energy of the deuterons in the axial direction. The energy spread among different shots was ∼0.5 MeV in the axial direction which is 2.5 times the spread in the radial direction. Furthermore, temporal differences on hard x-rays and neutron production over each direction are found. These differences show correlation with neutron energies. This could be related to the existence of two temporally separated neutron production times corresponding to different moments during the plasma focus discharge.

Idioma originalEnglish
Número de artículo035008
PublicaciónPlasma Physics and Controlled Fusion
Volumen57
N.º3
DOI
EstadoPublished - 1 mar 2015
Publicado de forma externa

Huella dactilar

plasma focus
energy distribution
Neutrons
Plasmas
neutrons
X rays
x rays
Photomultipliers
Deuterium
Kinetic energy
Phosphors
scintillation counters
shot
deuterons
energy
deuterium
kinetic energy
Detectors
moments
detectors

ASJC Scopus subject areas

  • Nuclear Energy and Engineering
  • Condensed Matter Physics

Citar esto

Moreno, José ; Veloso, Felipe ; Pavez, Cristian ; Tarifeño-Saldivia, Ariel ; Klir, Daniel ; Soto, Leopoldo. / Neutron energy distribution and temporal correlations with hard x-ray emission from a hundreds of joules plasma focus device. En: Plasma Physics and Controlled Fusion. 2015 ; Vol. 57, N.º 3.
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abstract = "In this paper, experimental measurements of neutron energy distribution and hard x-ray emission from a 320J deuterium operated plasma focus device are presented. Temporal measurements of neutron and hard x-ray emission are studied using different arrangements of six scintillator-photomultiplier detector systems, located either radially or axially with respect to the focus symmetry axis. The axial-to-radial ratio of both total neutron yield and neutron energies indicates anisotropic emission, which is consistent with a 100 keV kinetic energy of the deuterons in the axial direction. The energy spread among different shots was ∼0.5 MeV in the axial direction which is 2.5 times the spread in the radial direction. Furthermore, temporal differences on hard x-rays and neutron production over each direction are found. These differences show correlation with neutron energies. This could be related to the existence of two temporally separated neutron production times corresponding to different moments during the plasma focus discharge.",
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Neutron energy distribution and temporal correlations with hard x-ray emission from a hundreds of joules plasma focus device. / Moreno, José; Veloso, Felipe; Pavez, Cristian; Tarifeño-Saldivia, Ariel; Klir, Daniel; Soto, Leopoldo.

En: Plasma Physics and Controlled Fusion, Vol. 57, N.º 3, 035008, 01.03.2015.

Resultado de la investigación: Article

TY - JOUR

T1 - Neutron energy distribution and temporal correlations with hard x-ray emission from a hundreds of joules plasma focus device

AU - Moreno, José

AU - Veloso, Felipe

AU - Pavez, Cristian

AU - Tarifeño-Saldivia, Ariel

AU - Klir, Daniel

AU - Soto, Leopoldo

PY - 2015/3/1

Y1 - 2015/3/1

N2 - In this paper, experimental measurements of neutron energy distribution and hard x-ray emission from a 320J deuterium operated plasma focus device are presented. Temporal measurements of neutron and hard x-ray emission are studied using different arrangements of six scintillator-photomultiplier detector systems, located either radially or axially with respect to the focus symmetry axis. The axial-to-radial ratio of both total neutron yield and neutron energies indicates anisotropic emission, which is consistent with a 100 keV kinetic energy of the deuterons in the axial direction. The energy spread among different shots was ∼0.5 MeV in the axial direction which is 2.5 times the spread in the radial direction. Furthermore, temporal differences on hard x-rays and neutron production over each direction are found. These differences show correlation with neutron energies. This could be related to the existence of two temporally separated neutron production times corresponding to different moments during the plasma focus discharge.

AB - In this paper, experimental measurements of neutron energy distribution and hard x-ray emission from a 320J deuterium operated plasma focus device are presented. Temporal measurements of neutron and hard x-ray emission are studied using different arrangements of six scintillator-photomultiplier detector systems, located either radially or axially with respect to the focus symmetry axis. The axial-to-radial ratio of both total neutron yield and neutron energies indicates anisotropic emission, which is consistent with a 100 keV kinetic energy of the deuterons in the axial direction. The energy spread among different shots was ∼0.5 MeV in the axial direction which is 2.5 times the spread in the radial direction. Furthermore, temporal differences on hard x-rays and neutron production over each direction are found. These differences show correlation with neutron energies. This could be related to the existence of two temporally separated neutron production times corresponding to different moments during the plasma focus discharge.

KW - neutrons

KW - plasma focus

KW - x-rays

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