نقش کشش سطحی بر روی سطح مقطع های واکنش همجوشی با پرتابه ضعیف پیوند

نوع مقاله: مقاله پژوهشی کامل

نویسندگان

1 عضو هیات علمی دانشکده فیزیک، دانشگاه مازندران، بابلسر، مازندران، ایران

2 هیات علمی دانشکده علوم پایه ، گروه فیزیک ، دانشگاه پیام نور ، تهران، ایران

3 دانشجو

چکیده

در این مطالعه با توجه به اثرات کشش سطحی و شکست پرتابه قبل از رسیدن به آستانه همجوشی به بررسی واکنش همجوشی با هسته ضعیف پیوند پرداخته ایم. در بررسی پتانسیل هسته ای این واکنش از پتانسیل مجاورت نسخهAW95 استفاده شده است. با استفاده از این مدل که اثرات کشش سطحی در آن لحاظ شده است و مدل دینامیکی سه جسمی مسیریابی کلاسیکی سطح مقطع همجوشی کامل و ناکامل مورد محاسبه قرار گرفته است. نتایج حاصل نشان می دهند از بین چهار پارامتر کشـش سطحی ، ، و پتانسیل کولنی مربوط به مدل با کشش سطحی کم ترین عمق و محاسبات مربوط به مدل با کشش سطحی بیش ترین عمق را برای پتانسیل کل در نواحی داخلی تولید می کنند در حالی که پتانسیل حاصل از از لحاظ ارتفاع سد کولنی با داده تجربی توافق خوبی دارد. هم چنین سطح مقطع همجوشی کامل محاسبه شده با استفاده از مدل با کشش سطحی با داده های تجربی توافق بهتری دارد. در حالی که با استفاده از پارامتر سطح مقطع همجوشی ناکامل این اندرکنش داده های تجربی را بخوبی بازتولید می کند.

کلیدواژه‌ها


عنوان مقاله [English]

Role of surface energy coefficients in fusion with weakly bound projectile

نویسندگان [English]

  • Omid Naser Ghodsi 1
  • Seyyed Amin Seyyedi 2
1 1Department of Physics, Faculty of Science, Mazandaran University, Babolsar, Iran
2 Department of Physics, Faculty of Science, Payame Noor University, Tehran, Iran
چکیده [English]

In the present study we are attempting to investigate the influence of surface energy coefficients ("γ-MS,γ-MN1976,γ-MN1995,γ-MSNew" ) on the fusion systems including weakly bound projectiles. This interaction potential is calculated using proximity potential AW95 as well as three body dynamic classical trajectory to calculate fusion cross section. Our obtained results reveal that among the four surface energy coefficients, "γ-MS" leads to a shallow potential compared to other sets of "γ" , whereas "γ-MN1976" leads to the deepest potential as well as the barrier height of potential of "γ-MN1976" is better agreement with experimental data. Also complete fusion cross section of "γ-MS" surface energy is better agreement with experimental data while in the incomplete fusion cross section, the "γ-MN1976" can reproduce the experimental data well.

کلیدواژه‌ها [English]

  • Weakly bound nnuclei
  • Surface energy coefficients
  • Proximity potentials
  • Complete and incomplete Fusion cross section

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