Compton Scattering Measurements of Ar and O2 Using 59.54 keV Gamma-rays

Abstract

In this study, it has been investigated of the Compton profiles (CP) of the Ar and O2 gases using a Compton spectrometer having annular 241Am radioactive source. The photons emitted from the radioactive source and scattered photons from the samples were recorded using HPGe detector. In order to obtain experimental Compton profiles of the samples the Warwick codes were used. The experimental results obtained were compared with the theoretical results calculated by Hartree-Fock method. The results clearly show that the experimental and theoretical results are in good agreement, especially in the high momentum region. It was observed that while the difference between the experimental and theoretical results of Ar and O2 gases in the pz = 0 region is about 4%, this difference is below 1% after pz = 2.

Keywords

• Compton profile,scattering,gases,Hartree-Fock method,gamma rays,electron momentum distribution

59.54 keV’lik Gama-ışınları Kullanılarak Ar ve O2’nin Compton Saçılma Ölçümleri

Abstract

Bu çalışmada, dairesel 241Am radyoaktif kaynağa sahip bir Compton spektrometresi kullanılarak Ar ve O2 gazlarının Compton profilleri araştırılmıştır. Radyoaktif kaynaktan yayınlanan fotonlar ve numunelerden saçılan fotonlar HPGe detektörü kullanılarak kaydedildi. Numunelerin deneysel Compton profillerini elde etmek için Warwick kodları kullanıldı. Elde edilen deneysel sonuçlar Hartree-Fock yöntemi ile hesaplanan teorik sonuçlarla karşılaştırıldı. Sonuçlar, özellikle yüksek momentum bölgesinde deneysel ve teorik sonuçların uyumlu olduğunu açıkça göstermektedir. pz = 0 bölgesindeki Ar ve O2 gazlarının deneysel ve teorik sonuçları arasındaki fark yaklaşık % 4 iken pz = 2'den sonra bu farkın % 1'in altında olduğu görülmüştür.

Keywords

• Compton profile,saçılma,gazlar,Hartree-Fock metodu,gama ışınları,elektron momentum dağılımı

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