TY - GEN
T1 - Radiative properties of neutral Helium plasma
AU - Lefevre, T.
AU - Escarguel, A.
AU - Rosmej, F. B.
AU - Maurmann, S.
AU - Vitel, Y.
AU - Godbert-Mouret, L.
AU - Stamm, R.
PY - 2009/12/1
Y1 - 2009/12/1
N2 - We investigate helium line emission from singlet and triplet levels showing advantageous diagnostic properties even for complex parameter conditions in ITER divertor plasmas: high density, opacity and interlocking effects. Particular attention is paid to the emission from the singlet levels at λ (1s3d 1D - 1s2p 1P) = 667.8 nm and λ (1s3s 1S - 1s2p 1P) = 728.1 nm and the triplet levels at λ (1s3s 3S - 1s2p 3P) = 706.5 nm, λ (1s3d 3D - 1s2p 3P) = 587.7 nm and λ (1s4d 3D - 1s2p 3P) = 447.1 nm. Data from complementary experiments (1. MISTRAL, PIIM laboratory, 2. High Density Discharge, LULI laboratory) are contrasted with theory to validate multilevel collisional radiative simulations which explicitly take into account singlet and triplet levels up to large quantum numbers (SOPHIA code [1]). The use of "ab initio" LSJ-split cross sections calculations carried out with the FAC-code [2] are tested.
AB - We investigate helium line emission from singlet and triplet levels showing advantageous diagnostic properties even for complex parameter conditions in ITER divertor plasmas: high density, opacity and interlocking effects. Particular attention is paid to the emission from the singlet levels at λ (1s3d 1D - 1s2p 1P) = 667.8 nm and λ (1s3s 1S - 1s2p 1P) = 728.1 nm and the triplet levels at λ (1s3s 3S - 1s2p 3P) = 706.5 nm, λ (1s3d 3D - 1s2p 3P) = 587.7 nm and λ (1s4d 3D - 1s2p 3P) = 447.1 nm. Data from complementary experiments (1. MISTRAL, PIIM laboratory, 2. High Density Discharge, LULI laboratory) are contrasted with theory to validate multilevel collisional radiative simulations which explicitly take into account singlet and triplet levels up to large quantum numbers (SOPHIA code [1]). The use of "ab initio" LSJ-split cross sections calculations carried out with the FAC-code [2] are tested.
UR - https://www.scopus.com/pages/publications/84872695844
M3 - Conference contribution
AN - SCOPUS:84872695844
SN - 9781622763368
T3 - 36th EPS Conference on Plasma Physics 2009, EPS 2009 - Europhysics Conference Abstracts
SP - 669
EP - 672
BT - 36th EPS Conference on Plasma Physics 2009, EPS 2009 - Europhysics Conference Abstracts
T2 - 36th European Physical Society Conference on Plasma Physics 2009, EPS 2009
Y2 - 29 June 2009 through 3 July 2009
ER -