| 1. |
- V. Kabadi, N., et al.
(författare)
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Thermal decoupling of deuterium and tritium during the inertial confinement fusion shock-convergence phase
- 2021
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Ingår i: Physical review. E. - : American Physical Society. - 2470-0045 .- 2470-0053. ; 104:1
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Tidskriftsartikel (refereegranskat)abstract
- A series of thin glass-shell shock-driven DT gas-filled capsule implosions was conducted at the OMEGA laser facility. These experiments generate conditions relevant to the central plasma during the shock-convergence phase of ablatively driven inertial confinement fusion (ICF) implosions. The spectral temperatures inferred from the DTn and DDn spectra are most consistent with a two-ion-temperature plasma, where the initial apparent temperature ratio, T-T/T-D, is 1.5. This is an experimental confirmation of the long-standing conjecture that plasma shocks couple energy directly proportional to the species mass in multi-ion plasmas. The apparent temperature ratio trend with equilibration time matches expected thermal equilibration described by hydrodynamic theory. This indicates that deuterium and tritium ions have different energy distributions for the time period surrounding shock convergence in ignition-relevant ICF implosions.
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| 2. |
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| 3. |
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| 4. |
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| 5. |
- Frenje, J, et al.
(författare)
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Neutron emission Doppler-shift measurements in deuterium-tritium plasmas
- 1999
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Ingår i: REVIEW OF SCIENTIFIC INSTRUMENTS. - 0034-6748. ; 70:1, s. 1176-1180
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Spectrometry of the neutron emission is discussed as a probe of the fuel ion velocity distribution in tokamak plasmas where the instrumental energy calibration allows determination of Doppler shifts on an absolute scale or relative to the emission of ther
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| 6. |
- Frenje, J, et al.
(författare)
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Neutron spectrometry of triton burn-up in plasmas of deuterium
- 1998
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Ingår i: Plasma Physics and Controlled Fusion. ; 40, s. 1211-1219
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Tidskriftsartikel (refereegranskat)abstract
- The first measurement of the energy distribution of the neutron emission from the nuclear burn-up of tritons produced at 1 MeV in d + d --> t+p reactions is reported. The results refer to deuterium plasmas with a strongly pulsed neutron production attaine
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| 7. |
- Kallne, J, et al.
(författare)
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New neutron diagnostics with the magnetic proton recoil spectrometer
- 1999
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Ingår i: REVIEW OF SCIENTIFIC INSTRUMENTS. - 0034-6748. ; 70:1, s. 1181-1184
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The first magnetic proton recoil type neutron spectrometer has been put to use for diagnosing tokamak plasmas of high neutron yield rates (the range Y-n = 10(15)- 6 x 10(18) n/s). The spectrometer principles along with the diagnostic installation are pres
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| 8. |
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| 9. |
- Tardocchi, M, et al.
(författare)
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Neutron spectrometry of radio-frequency heated deuterium-tritium plasmas
- 1999
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Ingår i: REVIEW OF SCIENTIFIC INSTRUMENTS. - 0034-6748. ; 70:1, s. 1171-1175
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Tidskriftsartikel (refereegranskat)abstract
- Spectrometry of the neutron emission has been used to probe the nonthermal features of the fuel ion velocity distributions in tokamak plasmas, especially, those arising from auxiliary heating. The first time resolved measurements are reported from the use
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| 10. |
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