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| 001 | 850290 | ||
| 005 | 20240711114027.0 | ||
| 024 | 7 | _ | |2 Handle |a 2128/19470 |
| 037 | _ | _ | |a FZJ-2018-04332 |
| 088 | 1 | _ | |a Juel-4411 |
| 088 | _ | _ | |a Juel-4411 |2 JUEL |
| 100 | 1 | _ | |0 P:(DE-Juel1)130046 |a Janev, Ratko |b 0 |u fzj |
| 245 | _ | _ | |a Isotope Effects in Molecule Assisted Recombination and Dissociation in Divertor Plasmas |
| 260 | _ | _ | |a Jülich |b Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag |c 2018 |
| 300 | _ | _ | |a 37 p. |
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| 490 | 0 | _ | |a Berichte des Forschungszentrums Jülich |v 4411 |
| 520 | _ | _ | |a A burning fusion plasma will necessarily contain a mixture of D and T iso-topes, in the atomic, molecular and ionised components. It is demonstrated that molecule assisted recombination (MAR) and dissociation (MAD) mech-anisms expected to be strong in typical low-temperature hydrogenic diver-tor plasmas exhibit a kinetic isotope effect. The effect originates from the mass dependence of rate coeffcients of dissociative electron attachment and atomic-to-molecular ion conversion reactions, that are common precursors for MAR and MAD mechanisms. MAR favours a faster recombbination of the lighter ion with plasma electrons, while MAD favours a faster dissociation of the lighter molecule. The effect is cumulative, and during the ion residence time in the divertor it may produce significant differences in the recombined electron-ion pairs of the two isotopes, and in the amounts of dissociation products of the two isotopic molecules. For example a factor of 3 - 9 in MAR, and 22 - 400 in MAD in the concentrations of recombination and dissociation products results, for T = 3 eV, n$_{e}$ = 3 $\cdot$ 10$^{14}$ cm$^{-3}$ and [H$_{2}$]:[D$_{2}$]:[HD] in the range 1:1:0 - 1:1:2. Some implications of MAR and MAD isotope effects for divertor plasma physics are discussed. |
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| 700 | 1 | _ | |0 P:(DE-Juel1)5006 |a Reiter, Detlev |b 1 |u fzj |
| 856 | 4 | _ | |u https://juser.fz-juelich.de/record/850290/files/J%C3%BCl_4411_Reiter.pdf |y OpenAccess |
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| 914 | 1 | _ | |y 2018 |
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