关于 H11B 核聚变燃料的点火问题

IF 1.9 3区 物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY Frontiers in Physics Pub Date : 2024-08-05 DOI:10.3389/fphy.2024.1405435
Esmat Ghorbanpour, Fabio Belloni
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At high density, we find that the ideal ignition temperature is appreciably relaxed (e.g., <jats:inline-formula><mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"><mml:mrow><mml:msub><mml:mi>T</mml:mi><mml:mi>i</mml:mi></mml:msub><mml:mo>≃</mml:mo><mml:mn>150</mml:mn><mml:mtext> keV</mml:mtext></mml:mrow></mml:math></jats:inline-formula> for <jats:inline-formula><mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"><mml:mrow><mml:msub><mml:mi>n</mml:mi><mml:mi>i</mml:mi></mml:msub><mml:mo>∼</mml:mo><mml:msup><mml:mn>10</mml:mn><mml:mn>26</mml:mn></mml:msup><mml:mtext> </mml:mtext><mml:msup><mml:mtext>cm</mml:mtext><mml:mrow><mml:mo>−</mml:mo><mml:mn>3</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math></jats:inline-formula> and an optimal <jats:sup>11</jats:sup>B/H concentration <jats:inline-formula><mml:math xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"><mml:mrow><mml:mi>ε</mml:mi><mml:mo>=</mml:mo><mml:mn>0.15</mml:mn></mml:mrow></mml:math></jats:inline-formula>) and burn becomes substantial. 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摘要

我们根据最新的反应性、电子温度的另一种自洽计算方法、超热效应范围的扩大以及等离子体密度的影响,重新审视了最近关于H11B燃料理想点火的结果。在高密度条件下,我们发现理想的点火温度明显放宽(例如,当 ni∼1026 cm-3 和最佳 11B/H 浓度 ε=0.15 时,Ti≃150 keV),燃烧变得非常剧烈。我们随后研究了等压和等时惯性约束构型中的中心热点点火。虽然内爆驱动点火似乎不可行,但等时自热条件为质子快速点火的利用提供了有利的初步结论。在等时情况下,我们发现在ρR≃8.5 g/cm2和220≲Ti≲340 keV(80 ≲Te≲95 keV)处,ε=0.15时,点火能量有一个宽泛的最小值。
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On the ignition of H11B fusion fuel
We have revisited recent results on the ideal ignition of H11B fuel, in the light of the latest available reactivity, an alternative self-consistent calculation of the electron temperature, an increased extent of the suprathermal effects and the impact of plasma density. At high density, we find that the ideal ignition temperature is appreciably relaxed (e.g., Ti150 keV for ni1026 cm3 and an optimal 11B/H concentration ε=0.15) and burn becomes substantial. We have then investigated central hot-spot ignition in both isobaric and isochoric inertial confinement configurations. Although implosion-driven ignition appears to be unfeasible, the isochoric self-heating conditions foster favourable preliminary conclusions on the utilization of proton fast ignition. In the isochoric case, we find a broad minimum in the ignition energy at ρR8.5 g/cm2 and 220Ti340 keV (80 Te95 keV), for ε=0.15.
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来源期刊
Frontiers in Physics
Frontiers in Physics Mathematics-Mathematical Physics
CiteScore
4.50
自引率
6.50%
发文量
1215
审稿时长
12 weeks
期刊介绍: Frontiers in Physics publishes rigorously peer-reviewed research across the entire field, from experimental, to computational and theoretical physics. This multidisciplinary open-access journal is at the forefront of disseminating and communicating scientific knowledge and impactful discoveries to researchers, academics, engineers and the public worldwide.
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