scholarly journals Neutron Emission Profile Measurement and Fast Charge Exchange Neutral Particle Flux Measurement for Transport Analysis of Energetic Ions in JT-60U

2007 ◽  
Vol 2 ◽  
pp. 019-019 ◽  
Author(s):  
Masao ISHIKAWA ◽  
Takeo NISHITANI ◽  
Yoshinori KUSAMA ◽  
Atsuhiko SUKEGAWA ◽  
Manabu TAKECHI ◽  
...  
Keyword(s):  
Charge Exchange ◽  
Particle Flux ◽  
Neutral Particle ◽  
Neutron Emission ◽  
Flux Measurement ◽  
Profile Measurement ◽  
Energetic Ions ◽  
Fast Charge ◽  
Emission Profile ◽  
Transport Analysis

scholarly journals A study on fast digital discrimination of neutron and gamma-ray for improvement neutron emission profile measurement

2014 ◽  
Vol 85 (11) ◽  
pp. 11E118 ◽  
Author(s):  
Y. Uchida ◽  
E. Takada ◽  
A. Fujisaki ◽  
M. Isobe ◽  
K. Ogawa ◽  
...  
Keyword(s):  
Gamma Ray ◽  
Neutron Emission ◽  
Profile Measurement ◽  
Emission Profile

Fast neutron-gamma discrimination on neutron emission profile measurement on JT-60U

2010 ◽  
Vol 81 (10) ◽  
pp. 10D334 ◽  
Author(s):  
K. Ishii ◽  
K. Shinohara ◽  
M. Ishikawa ◽  
M. Baba ◽  
M. Isobe ◽  
...  
Keyword(s):  
Fast Neutron ◽  
Neutron Emission ◽  
Profile Measurement ◽  
Emission Profile

Development of fast neutron pinhole camera using nuclear emulsion for neutron emission profile measurement in KSTAR

2016 ◽  
Vol 87 (11) ◽  
pp. 11D840 ◽  
Author(s):  
Y. Izumi ◽  
H. Tomita ◽  
Y. Nakayama ◽  
S. Hayashi ◽  
K. Morishima ◽  
...  
Keyword(s):  
Fast Neutron ◽  
Nuclear Emulsion ◽  
Neutron Emission ◽  
Pinhole Camera ◽  
Profile Measurement ◽  
Emission Profile

scholarly journals Titan's exosphere and its interaction with Saturn's magnetosphere

2008 ◽  
Vol 367 (1889) ◽  
pp. 743-752 ◽  
Author(s):  
Iannis Dandouras ◽  
Philippe Garnier ◽  
Donald G Mitchell ◽  
Edmond C Roelof ◽  
Pontus C Brandt ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Remote Sensing ◽  
Charge Exchange ◽  
Mass Spectrometer ◽  
Upper Atmosphere ◽  
Neutral Atoms ◽  
Energetic Ions ◽  
Imaging Instrument ◽  
Singly Charged

Titan's nitrogen-rich atmosphere is directly bombarded by energetic ions, due to its lack of a significant intrinsic magnetic field. Singly charged energetic ions from Saturn's magnetosphere undergo charge-exchange collisions with neutral atoms in Titan's upper atmosphere, or exosphere, being transformed into energetic neutral atoms (ENAs). The ion and neutral camera, one of the three sensors that comprise the magnetosphere imaging instrument (MIMI) on the Cassini/Huygens mission to Saturn and Titan, images these ENAs like photons, and measures their fluxes and energies. These remote-sensing measurements, combined with the in situ measurements performed in the upper thermosphere and in the exosphere by the ion and neutral mass spectrometer instrument, provide a powerful diagnostic of Titan's exosphere and its interaction with the Kronian magnetosphere. These observations are analysed and some of the exospheric features they reveal are modelled.

Framework to model neutral particle flux in convex high aspect ratio structures using one-dimensional radiosity

2017 ◽  
Vol 128 ◽  
pp. 141-147 ◽  
Author(s):  
Paul Manstetten ◽  
Lado Filipovic ◽  
Andreas Hössinger ◽  
Josef Weinbub ◽  
Siegfried Selberherr
Keyword(s):  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Particle Flux ◽  
Neutral Particle ◽  
One Dimensional

scholarly journals Charge exchange neutral particle analysis with natural diamond detectors on LHD heliotron

2001 ◽  
Vol 72 (1) ◽  
pp. 611-614 ◽  
Author(s):  
M. Isobe ◽  
M. Sasao ◽  
S. Iiduka ◽  
A. V. Krasilnikov ◽  
S. Murakami ◽  
...  
Keyword(s):  
Charge Exchange ◽  
Neutral Particle ◽  
Natural Diamond ◽  
Particle Analysis

scholarly journals Modeling of the Hα Emission from ADITYA Tokamak Plasmas

Atoms ◽  
2019 ◽  
Vol 7 (4) ◽  
pp. 95
Author(s):  
Ritu Dey ◽  
Malay B. Chowdhuri ◽  
Joydeep Ghosh ◽  
Ranjana Manchanda ◽  
Nandini Yadava ◽  
...  
Keyword(s):  
Charge Exchange ◽  
Molecular Hydrogen ◽  
Neutral Particle ◽  
Exchange Process ◽  
Neutral Hydrogen ◽  
Spatial Profile ◽  
Charge Exchange Process ◽  
Neutral Particle Transport ◽  
Particle Penetration ◽  
Hα Emission

The spatial profile of Hα spectrum is regularly measured using a high-resolution multi-track spectrometer in ADITYA tokamak to study the neutral particle behavior. The Monte Carlo neutral particle transport code DEGAS2 is used to model the experimental Hα spectral emissions. Through the modeling of the spectral line profile of Hα, it is found that the neutral hydrogen, which is produced from molecular hydrogen and molecular hydrogen ion dissociation processes contributes 56% to the total Hα emission, and the atoms which are produced from charge-exchange process have 30% contribution. Furthermore, the experimentally measured spatial profile of chord integrated brightness was modeled for the two plasma discharges having relatively high and low density to understand the neutral particle penetration. The presence of neutrals inside the core region of the ADITYA tokamak is mainly due to the charge-exchange process. Furthermore, it is observed that neutral particle penetration is lower in higher density discharge.

Design of Ultra-Fast Charge eXchange Recombination Spectroscopy diagnostic on EAST tokamak

2017 ◽  
Vol 12 (08) ◽  
pp. C08022-C08022 ◽  
Author(s):  
Y. Yu ◽  
Y. Li ◽  
M. Ye ◽  
H. Wang ◽  
Z. Chen ◽  
...  
Keyword(s):  
Charge Exchange ◽  
Fast Charge
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