مجلۀ پژوهش فیزیک ایران

رفتار پراکندگی اتم‌های خنثی 132Xe در دماهای 165K و 275K

نوع مقاله : مقاله پژوهشی

نویسنده

Abdulrahman Akour

دانشکده علوم پایه، کالج الهوسون، دانشگاه کاربردی البلقا، سالت، اردن

https://doi.org/10.47176/ijpr.21.3.38481 
چکیده
هدف کار حاضر استفاده از روش شاخص گالیتسکی- میگدال- فاینمن در مورد مولکول‌های دو اتمی 132Xe است، تا جابه‌جایی فاز مؤثری را به دست آوریم که در محاسبه سطح مقطع‌های مؤثر کل و وشکسانی به کار گرفته شده است. این مطالعه نشان می‌دهد که لازم است امواج جزئی تا 14-1) غالب است، در غیر این صورت امواج جزئی D و G غالب خواهند بود. بلندترین قله از تشدید موج- D و – G جزئی حاصل می‌شود که در آنها دستگاه حالت شبه- مقید با مانع مرکز گرای 2,4=l مقید شده است. همچنین سطح مقطع میانگین محاسبه شده است

کلیدواژه‌ها

سطح مقطع کل مؤثر
جابه‌جایی فاز مؤثر
سطح مقطع وشکسانی مؤثر
سازوکار گالیتسکی- میگدال- فاینمن
گاز 132Xe

عنوان مقاله English

‎ ‎Properties of 132Xe Neutral Atoms Scattering for 165K and 275K ‎Temperatures

نویسنده English

A Akour
Department of Basic Science, Al-Huson College, Al-Balqa Applied University, Salt, Jordan
چکیده English

This work aims to use an important method Galitskii-Migdal-Feynman (GMF) for ‎diatomic molecules 132Xe2, to calculate the effective phase shifts which are then used to ‎compute the effective total and viscosity cross sections at low density and temperature . ‎this study has shown that it’s crucial to include partial waves up to ‎ ‎; for ‎ ‎, the ‎effect of the potential becomes negligible .‎
‎ Comparing with partial waves cross sections we deduce that the cross section is ‎dominated by S-wave scattering for low energy (wave number k < 0.1 Å-1), otherwise D ‎and G partial waves dominate . The highest peak rises from the partial effective D and G-‎wave resonance, where the system sustains a quasi-bound state trapped by the centrifugal barrier. The average cross section is also determined. ‎

کلیدواژه‌ها English

Effective Total Cross Section
Effective Phase Shifts
Effective Viscosity Cross Section
Galitskii-Migdal-Feynman Formalism
132Xe Gas
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