Journal
REVIEW OF SCIENTIFIC INSTRUMENTS
Volume 83, Issue 10, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4738657
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A magnetic recoil spectrometer (MRS) has been installed and extensively used on OMEGA and the National Ignition Facility (NIF) for measurements of the absolute neutron spectrum from inertial confinement fusion implosions. From the neutron spectrum measured with the MRS, many critical implosion parameters are determined including the primary DT neutron yield, the ion temperature, and the down-scattered neutron yield. As the MRS detection efficiency is determined from first principles, the absolute DT neutron yield is obtained without cross-calibration to other techniques. The MRS primary DT neutron measurements at OMEGA and the NIF are shown to be in excellent agreement with previously established yield diagnostics on OMEGA, and with the newly commissioned nuclear activation diagnostics on the NIF. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4738657]
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