An improved method of unfolding neutron TOF spectrum for low ion temperature inertial confinement fusion

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SONG Zi-Feng, TANG Qi, LIU Zhong-Jie, ZHAN Xia-Yu and CHEN Jia-Bin. An improved method of unfolding neutron TOF spectrum for low ion temperature inertial confinement fusion[J]. Chinese Physics C, 2014, 38(6): 066201. doi: 10.1088/1674-1137/38/6/066201
SONG Zi-Feng, TANG Qi, LIU Zhong-Jie, ZHAN Xia-Yu and CHEN Jia-Bin. An improved method of unfolding neutron TOF spectrum for low ion temperature inertial confinement fusion[J]. Chinese Physics C, 2014, 38(6): 066201.  doi: 10.1088/1674-1137/38/6/066201 shu
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Received: 2013-07-04
Revised: 1900-01-01
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An improved method of unfolding neutron TOF spectrum for low ion temperature inertial confinement fusion

    Corresponding author: CHEN Jia-Bin,

Abstract: The fuel ion temperature in inertial confinement fusion can be determined from the neutron energy spectrum. For the implosion experiment with low neutron yield, and thus low signal-to-noise ratio, a new technique to unfold the neutron energy spectrum from the observed neutron time-of-flight signal is presented in this paper. This method uses a low-pass filter to remove noise from the signal with a threshold value determined by power spectrum analysis. This technique has been applied to the analysis of the observed neutron time-of-flight signals in the indirect drive implosion experiment conducted on Shenguang Ⅲ prototype laser facility, and fuel ion temperatures of about 1.0 keV are obtained.

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