Pycnonuclear reactions in dense astrophysical and fusion plasmas

1999 ◽  
Vol 6 (7) ◽  
pp. 2649-2671 ◽  
Author(s):  
Setsuo Ichimaru ◽  
Hikaru Kitamura
Keyword(s):  
Fusion Plasmas ◽  
Pycnonuclear Reactions

scholarly journals On the accuracy of the binary-collision algorithm in particle-in-cell simulations of magnetically confined fusion plasmas

2021 ◽  
Vol 87 (2) ◽  
Author(s):  
Timo P. Kiviniemi ◽  
Eero Hirvijoki ◽  
Antti J. Virtanen
Keyword(s):  
Finite Difference ◽  
Electric Fields ◽  
Finite Size ◽  
Binary Collision ◽  
Conserved Quantities ◽  
Fusion Plasmas ◽  
Fusion Plasma ◽  
Particle In Cell ◽  
Magnetically Confined ◽  
Scale Length

Ideally, binary-collision algorithms conserve kinetic momentum and energy. In practice, the finite size of collision cells and the finite difference in the particle locations affect the conservation properties. In the present work, we investigate numerically how the accuracy of these algorithms is affected when the size of collision cells is large compared with gradient scale length of the background plasma, a parameter essential in full- $f$ fusion plasma simulations. Additionally, we discuss implications for the conserved quantities in drift-kinetic formulations when fluctuating magnetic and electric fields are present: we suggest how the accuracy of the algorithms could potentially be improved with minor modifications.

Components for heating and fueling of fusion plasmas

2013 ◽  
Author(s):  
Kenneth Schrock ◽  
Ian Roth ◽  
Marcel Gaudreau ◽  
Michael Kemkes
Keyword(s):  
Fusion Plasmas

Fuel ion ratio determination in NBI heated deuterium tritium fusion plasmas at JET using neutron emission spectrometry

2015 ◽  
Vol 55 (2) ◽  
pp. 023005 ◽  
Author(s):  
C. Hellesen ◽  
J. Eriksson ◽  
F. Binda ◽  
S. Conroy ◽  
G. Ericsson ◽  
...  
Keyword(s):  
Neutron Emission ◽  
Emission Spectrometry ◽  
Fusion Plasmas ◽  
Ratio Determination
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