Doğrudan Tahrikli Eylemsiz Hapsedilme Füzyon içersinde Azalan Şok Yaklaşımı Boyunca Adiabat Şekillendirme

Year 2021, Volume: 24 Issue: 3, 1063 - 1072, 01.09.2021

Samira Mohammadkhani , Abbas Ghasemizad

https://doi.org/10.2339/politeknik.806704

Abstract

Bu çalışmada, iki aşamalı bir basınç darbesi ile tahrik edilen çift katmanlı küresel bir hedefin iç patlamalarını inceledik. Çalışmada ilk önce azalan şok yaklaşımı kullanılarak entropinin adiabatının, yerleşik teorik modellerle uyumlu basit bir güç yasasını izleyerek nasıl bir forma dönüştüğünü belirledik. Daha sonra üç farklı yakıt yoğunluğu koşulu için optimum adiabat parametresini doğrudan matematiksel yaklaşımla ,başlangıç yoğunluğu ne kadar yüksekse ve adiabat parametresinin bir o kadar azaldığını hesapladık. Sonuç olarak, nispeten hızlı ışınlama süreleri ve düşük lazer yoğunluğu için, tabakalı adiyabitik değerlerimizin literatürdeki çalışmalarla uyumlu olduğunu belirledik.

Keywords

Eylemsiz füzyon hapsetme, adiabat şekillendirme, azalan şok yaklaşımı

Adiabat Shaping in Direct Drive Inertial Confinement Fusion Implosions through the Decaying Shock Approximation

Abstract

We consider the implosions of a double-layer spherical target driven by a two-step pressure pulse. By employing the decaying shock approximation the adiabat of the entropy is shaped, following a simple power law in agreement with the established theoretical models. Then we directly calculate the optimum adiabat parameter for three different fuel density states and find that the higher the initial density is, the lower adiabat parameter. Although the calculated adiabat values are close to ones obtained in previous investigations, they are achieved for relatively fast irradiation times and low laser intensity.

Keywords

Inertial confinement fusion, adiabat shaping, decaying shock method

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