Constraining time-dependent ion temperature measurements in inertial confinement fusion (ICF) implosions with an intermediate distance neutron time-of-flight (nToF) detector

Moore, A. S.; Schlossberg, D. J.; Eckart, M. J.; Hartouni, E. P.; Hilsabeck, T. J.; Jeet, J. S.; Kerr, S. M.; Nora, R. C.; Kilkenny, J.

doi:10.1063/5.0099933

Constraining time-dependent ion temperature measurements in inertial confinement fusion (ICF) implosions with an intermediate distance neutron time-of-flight (nToF) detector

Journal Article · Mon Nov 14 00:00:00 EST 2022 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/5.0099933· OSTI ID:1898155

; ; Eckart, M. J.; ; Hilsabeck, T. J.; ; ; ; Kilkenny, J.

A concept for using an intermediate distance (0.3–3.0 m) neutron time-of-flight (nToF) to provide a constraint on the measurement of the time-dependence of ion temperature in inertial confinement fusion implosions is presented. Simulated nToF signals at different distances are generated and, with a priori knowledge of the burn-averaged quantities and burn history, analyzed to determine requirements for a future detector. Results indicate a signal-to-noise ratio >50 and time resolution <20 ps to constrain the ion temperature gradient to ∼±25% (0.5 keV/100 ps).

View Accepted Manuscript (Publisher)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1898155

Journal Information:: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 11 Vol. 93; ISSN 0034-6748

Publisher:: American Institute of PhysicsCopyright Statement

Country of Publication:: United States

Language:: English

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