التفاصيل البيبلوغرافية
| العنوان: |
P2 asymmetry of Au's M-band flux and its smoothing effect due to high-Z ablator dopants |
| المؤلفون: |
Yongsheng Li, Chuanlei Zhai, Guoli Ren, Jianfa Gu, Wenyi Huo, Xujun Meng, Wenhua Ye, Ke Lan, Weiyan Zhang |
| المصدر: |
Matter and Radiation at Extremes, Vol 2, Iss 2, Pp 69-76 (2017) |
| بيانات النشر: |
AIP Publishing LLC, 2017. |
| سنة النشر: |
2017 |
| المجموعة: |
LCC:Nuclear and particle physics. Atomic energy. Radioactivity |
| مصطلحات موضوعية: |
Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798 |
| الوصف: |
X-ray drive asymmetry is one of the main seeds of low-mode implosion asymmetry that blocks further improvement of the nuclear performance of “high-foot” experiments on the National Ignition Facility [Miller et al., Nucl. Fusion 44, S228 (2004)]. More particularly, the P2 asymmetry of Au's M-band flux can also severely influence the implosion performance of ignition capsules [Li et al., Phys. Plasmas 23, 072705 (2016)]. Here we study the smoothing effect of mid- and/or high-Z dopants in ablator on Au's M-band flux asymmetries, by modeling and comparing the implosion processes of a Ge-doped ignition capsule and a Si-doped one driven by X-ray sources with P2 M-band flux asymmetry. As the results, (1) mid- or high-Z dopants absorb hard X-rays (M-band flux) and re-emit isotropically, which helps to smooth the asymmetric M-band flux arriving at the ablation front, therefore reducing the P2 asymmetries of the imploding shell and hot spot; (2) the smoothing effect of Ge-dopant is more remarkable than Si-dopant because its opacity in Au's M-band is higher than the latter's; and (3) placing the doped layer at a larger radius in ablator is more efficient. Applying this effect may not be a main measure to reduce the low-mode implosion asymmetry, but might be of significance in some critical situations such as inertial confinement fusion (ICF) experiments very near the performance cliffs of asymmetric X-ray drives. |
| نوع الوثيقة: |
article |
| وصف الملف: |
electronic resource |
| اللغة: |
English |
| تدمد: |
2468-080X |
| Relation: |
https://doaj.org/toc/2468-080X |
| DOI: |
10.1016/j.mre.2016.12.001 |
| URL الوصول: |
https://doaj.org/article/6ef97d76a50c4e7f8a95268483a867cc |
| رقم الانضمام: |
edsdoj.6ef97d76a50c4e7f8a95268483a867cc |
| قاعدة البيانات: |
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