کمیت های ترمودینامیکی و سطح مقطع باقی مانده تبخیر ایزوتوپهای فوق سنگینg 272Ds and 273Rبا استفاده از مدل سیستم های دوهسته ای

پهلوانی, محمدرضا; معصومی دینان, مانا

doi:10.22055/jrmbs.2021.17266

کمیت های ترمودینامیکی و سطح مقطع باقی مانده تبخیر ایزوتوپهای فوق سنگینg 272Ds and 273Rبا استفاده از مدل سیستم های دوهسته ای

نوع مقاله : مقاله پژوهشی کامل

نویسندگان

گروه فیزیک هسته‌ای، دانشکدة علوم پایه، دانشگاه مازندران، بابلسر، ایران

10.22055/jrmbs.2021.17266

چکیده

دراین پژوهش با استفاده از مدل سیستم دوهسته ای (DNS) سطح مقطع باقیمانده تبخیر دو واکنش همجوشی سرد 64Ni+208Pb و 64Ni+209Bi محاسبه شده است. پتلنسیل هسته ای مورد استفاده در این روش پتانسیل پراکسیمیتی می باشد. در محاسبات انجام شده در این پژوهش، کمیت های ترمودینامیکی هسته های مرکب از قبیل دما و ظرفیت گرمایی با استفاده از تئوری گینزبرگ لاندائو و مدل جابجایی گاز فرمی وابسته به دما بدست آمده اند. نتائج بدست آمده با نتائج تجربی و نتائج تئوری حاصل از روش دیگر مقایسه شده است. همچنین نمودار ظرفیت گرمایی بر حسب دما شکل S مانندی دارد که نشاندهنده شکسته شدن جفت های نوکلئونی است.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Thermodynamic quantities and evaporation residue cross-section of super heavy isotopes 272Ds and 273Rg using DNS model

نویسندگان [English]

Mohammad Reza Pahlavani
Mana Masoumi dinan

Department of Physics, Faculty of basic Science,University of Mazandaran, Babolsar, Iran

چکیده [English]

In this study by Using the di-nuclear systems model (DNS), the evaporation residue cross-section of two cold fusion reactions 64Ni+208Pb and 64Ni+209Bi is calculated. ،The nuclear proximity potential is used for interaction between nuclei. In these calculations thermodynamic quantities of compound nuclei such as temperature and heat capacity are obtained using Ginzburg- Landau (EGL) theory and temperature dependent back shifted Fermi gas model (TDP- BSFGM). The obtained results of cross section are compared with experimental data and other data that is obtained using another model. Also, the plot of heat capacity versus temperature has a S-shape form which is indicator of breaking of the nucleonic pairs.

کلیدواژه‌ها [English]

Heat capacity
Super heavy nuclei
Temperature
Cross section

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