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Using secondary-proton spectra to study the compression and symmetry of deuterium-filled capsules at OMEGA
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27.It is possible to calculate a lower value of from the secondary-neutron yield by assuming that the mean electron temperature was equal not to the primary-yield-averaged ion temperature but to the value inferred from Fig. 7, with the assumption that the measured secondary-proton yield was in saturation. This implicitly assumes that the tritons producing secondary neutrons through reaction (4) saw the same mean electron temperature as the that produced the secondary protons through reaction (2), which would be true if the fuel was uniform but not if the temperature profile was centrally peaked.
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