Ultra Yogun Lazer-Katı Etkile¸simleri Sonucu Üretilen Proton Enerji Spektrumlarının İncelenmesi

Yapılan bu çalışmada,ultra yogun lazerlerin ( ˘ 1020 W/cm2 ) farklı kalınlıktaki katı hedeflerle etkileşimi sonucu üretilen protonlar incelenmiştir. Ayrıca ana lazerden önce kullanılan ve younluğu∼ 1012 W/cm2 seviyesinde olan ikincil lazerle önceden oluşturulmuş plazmaların, üretilen protonların enerji spektrumları üzerindeki etkisi araştırılmıştır. Ana lazer tarafından ateşlenen katı hedeflerin kalınlıgının, üretilen protonların yoğunluğu ve maksimum enerjilerine olan etkisi, ayrıca katı maddelerin ön kısmında (lazerle etkileşimin gerçekleştigi bölge) ikincil lazer tarafından önceden oluşturulan plazmaların hızlandırılan protonlar üzerindeki etkisi çalışılmıştır. 2 boyutlu EPOCH PIC simülasyonlarının sonuçları deneysel verilerin sonuçları ile karşılaştırılmış ve elde edilen bulguları destekledigi gözlemlenmiştir.

Measurements of Proton Energy Spectra Generated by Ultra Intense Laser Solid Interactions

In this study, we have presented proton energy spectra produced by such high irradiance (1020 W/cm2 ) lasers interacting with a pre formed plasma in front of the target and with solid targets without a pre formed plasma. The effects of the target thickness and the generated plasma on the maximum energy and proton numbers are assessed. It is observed that experimentally measured maximum proton energy and number of protons have a dependence on target thickness and preformed plasma scale length produced by prepulse laser with the irradiance of ∼ 1012 W/cm2 . 2D EPOCH PIC code simulation results of the energy spectra of protons are in a good agreement with measured experimental results.

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