Variation of Compton Profiles of N2 with Increasing Pressures

Öz

In this study, it has been measured the Compton Profile of the Nitrogen gas at different pressures by using a Compton Profile Spectrometer with an annular Am-241 radioactive source, which emits 59.537 keV photons. The inelastic scattered g-rays from gas molecules in a gas chamber have been measured using a HPGe detector connected to the a Tennelec 244 Amplifier and MAESTRO MCA Software.  The gas pressure had been set by using a manometer before the measurements. The data have been corrected for all environmental scattering effects, i.e. scattering from gas chamber’s walls, collimators, and etc. Then, the Compton Profile of Nitrogen gases at five different pressures have been determined using a Matlab Code. We found that the Compton Profiles changes with increasing pressures.

Anahtar Kelimeler

• Compton Profile,Pressure,Nitrogen gas,Electron Momentum Distribution

Artan Basınç ile N2’nin Compton Profilelerinin Değişimi

Öz

Bu çalışmada, 59.537 keV enerjili g-ışınları yayınlayan bir Am-241 radyoaktif kaynağa sahip Compton Spektrometresi kullanılarak azot gazının Compton Profilleri ölçüldü. Bir gaz odasına hapsedilmiş gaz moleküllerinden inelastic olarak saçılmış g-ışınları Tennelec 244 Yükseltici ve MAESTRO MCA Programına bağlanmış bir HPGe dedektör kullanılarak ölçüldü. Ölçümlerden önce gaz basıncı bir manometre ile ayarlandı. Veriler, bütün çevresel saçılma etkileri için, gaz odasının duvarlarından, kolimatörlerden, vs., saçılmalar gibi, düzeltildi.  Daha sonra, beş farklı basınçta azot gazının Compton Profileleri Matlab’de yazılmış bir program ile belirlendi. Compton Profile değerlerinin artan basınçla değiştiği belirlendi.

Anahtar Kelimeler

• Compton Profile,Basınç,Azot gazı,Elektron Momentum Dağılımı

Kaynakça

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