16O+16O Saçılması için ELAB=145-1120 MeV Aralığında Tek-Kanal Optik Model Potansiyel Formları ile Diferansiyel Tesir-Kesiti Hesaplamaları

Bu çalışmada, ELAB = 145, 250, 350, 480, 704 ve 1120 MeV gelme enerjileri için 16O+16O elastik saçılmasının tek-kanal optik model analizleri FRESCO bilgisayar programı kullanılarak gerçekleştirilmiştir. Deneysel diferansiyel tesir-kesiti ölçümleri, WS2+iWS2 ve WS2+iWS tipindeki fenomenolojik potansiyel formları ile yapılan hesaplamalarla karşılaştırılmıştır. Deneysel veriler ile teorik hesaplamalar arasındaki uyum χ^2 hata hesabı ile belirlenmiştir. Bu çalışmanın limitleri dahilinde, WS2+iWS2 formundaki potansiyel ile yapılan analizlerin biraz daha başarılı olduğu bulunmuş ve önceki hesaplamalarımıza göre daha düşük χ^2 değerlerine ulaştıran yeni parametre değerleri önerilmiştir.

Differential Cross-Section Calculations for 16O+16O Scattering by Single-Channel Optical Model Potential Forms at ELAB=145-1120 MeV

In the present work, single-channel optical model analyses of 16O+16O elastic scattering for the incident energies of 145, 250, 350, 480, 704 and 1120 MeV were performed using FRESCO computer program. Experimental differential cross-section measurements were compared with the outcomes of the calculations made for the phenomenological potential forms WS2+iWS2 and WS2+iWS. The agreement between the experimental data and the theoretical calculations was determined by the χ2 criterion. Within the limitations of this study, it is found that more successful analyses obtained by using WS2+iWS2 potential form and new parameter values introduced, which lead to lower χ2 values than our previous calculations.

___

  • Aytekin, H., Kürkçüoğlu, M. E., Boztosun, İ., 2007. 16O+16O Esnek Saçılmasının Optik Model ile İncelenmesi. Anadolu Üniversitesi Bilim ve Teknoloji Dergisi, 8(1), 229-239.
  • Bartnitzky, G., Blazenik A., Bohlen H. G., 1996. Model-unrestricted Nucleus-Nucleus Scattering Potentials from Measurement and Analysis of 16O+16O Scattering. Physics Letters B, 365, 23-28.
  • Brandan, M. E., Satchler, G. R., 1991. Optical Potential Ambiguities and 16O+16O at 350 MeV. Physics Letters B, 256, 311-315.
  • Brandan, M. E., Satchler, G. R., 1997. The Interaction between Light Heavy-ions and What it Tells Us. Physics Reports, 285, 143-243.
  • El-Azab Farid, M. F., Mahmoud, Z. M. M., Hassan, G. S., 2001. Analysis of Heavy-ions Elastic Scattering Using the Double Folding Cluster Model. Nuclear Physics A, 691, 671-690.
  • Furumoto, T., Sakuragi, Y., Yamamoto, Y., 2014. Medium Effect in the High-density Region Probed by Nucleus-Nucleus Elastic Scattering. Physical Review C, 90(4), 041601-1 – 041601-5.
  • Gonzalez, M. M., Brandan, M. E., 2001. The Dispersion Relation Applied to the Radial Shape and Energy Dependence of the 16O-16O Potential at Intermediate Energies. Nuclear Physics A, 693, 603-615.
  • Hassanain, M. A., Al Sebiey, S. M. M., 2014. Analysis of 16O+16O Elastic and Inelastic Scattering Using the Optical Model and the Coupled-Channels Mechanism. Physical Review C, 90(5), 054606-1 – 054606-7.
  • Hassanain, M. A., Ibraheem, A. A., Al Sabiey, S. M. M., Mokhtar, S. R., Zaki, M. A., Mahmoud, Z. M. M., Behairy, K. O., El-Azab Farid, M., 2013. Investigation of 16O+16O Elastic Scattering Using the α-cluster Folding Model. Physical Review C, 87(6), 064606-1 - 064606-10.
  • Khoa, D. T., von Ortezen, W., Bohlen H. G., Nuoffer F., 2000. Study of Diffractive and Refractive Structure in the Elastic 16O+16O Scattering at Incident Energies Ranging from 124 to 1120MeV. Nuclear Physics A, 672, 387-416.
  • Kondo, Y., Robson B. A., Smith, R., 1989. A Deep Potential Description of the 16O+16O System. Physics Letters B, 227, 310-314.
  • Kondo, Y., Sugiyama, Y., Tomita, Y., Yamamuchi, Y., Ikeoze, H., Idenio, K., Hamada, S., Sugimutsu, T., Hijiya, M., Fujita, H., 1996. Airy Minimum Crossing θcm=90° at Elab=124MeV for the 16O+16O System. Physics Letters B, 365, 17-22.
  • Kürkçüoğlu, M. E., 2006. 16O+16O Esnek Saçılmasının Fenomenolojik ve Mikroskobik Potansiyeller ile Optik Model Analizleri, Doktora Tezi, Zonguldak Karaelmas Üniversitesi, Fen Bilimleri Enstitüsü, Zonguldak, Türkiye.
  • Kürkçüoğlu, M. E., Aytekin, H., 2006. An Investigation of the 16O+16O Elastic Scattering by Phenomenological and Double-Folding Potentials in Optical Model Formalism at the Energies Between ELAB=75 and 145MeV. Indian Journal of Physics, 80(6), 641-645.
  • Kürkçüoğlu, M. E., Aytekin, H., Boztosun, İ., 2006. An Investigation of the 16O+16O Elastic Scattering by Using Alpha-Alpha Double Folding Potential in Optical Model Formalism. Modern Physics Letters A, 21 (29), 2217-2232.
  • Kürkçüoğlu, M. E., Tülüler, M., 2015. 16O+16O Esnek Saçılmasının 5 MeV/n Civarında Sığ Ek-Potansiyeller Kullanılarak Tek-Kanal Optik Model Analizleri. Süleyman Demirel Üniversitesi Fen Dergisi, 10(1): 85-94.
  • Kürkçüoğlu, M.E., Cof, G., Aytekin, H., Boztosun, İ., 2013. Introducing a Global Optical Model Approach for Analysing 16O+16O Elastic Scattering at 5-10 MeV/nucleon Region. Süleyman Demirel Üniversitesi Fen Dergisi, (8): 71-81.
  • Maher, J. V., Sachs, R. H., Siemssen, R. H., Weildinger, A., Bromley, D. A., 1969. Nuclear Interaction of Oxygen with Oxygen. Physical Review, 188, 1665-1682.
  • Minomo, K., Kohno, M., Ogata, K., 2016. Microscopic Coupled-Channels Calculations of Nucleus-Nucleus Scattering Including Chiral Three-Nucleon-Force Effects. Physical Review C, 93(1), 014607-1 – 014607-6.
  • Nicoli, M. P., Freeman, F., Aissaou, R.M., Beck, N., Elanigue, E., Noucier, A., Morsad, R., Szilner, A., Basrak, S., Brandan, M.E., 1999. Refractive Effects in the Elastic Scattering of Light Heavy-ions between 5 and 10 MeV/n: the 16O+16O Reaction. Nuclear Physics A, 654, 882-887.
  • Rahmat, M., Modarres, M., 2018. Folding Model Analyses of 12C-12C and 16O-16O Elastic Scattering Using the Density-dependent LOCV-averaged Effective Interaction. Physical Review C, 97(3), 034611-1 – 034611-13.
  • Sugiyama, Y., Tomita, Y., Ikeoze, H., Yamamuchi, Y., Idenio, K., Hamada, S., Sugimutsu, T., Hijiya M., Kondo Y., 1993. Observation of Airy Oscillation for the 16O+16O System at Elab=145MeV. Physics Letters B, 312, 35-39.
  • Thompson, I. J., 1997. FRESCO, a Coupled-Channels Code, (unpublished), England.
  • Thompson, I.J., 1988. Coupled Channels Methods for Nuclear Physics, Computer Physics Reports Vol. 7, pp. 167-212.
  • Tülüler, M., 2015. 16O+16O Saçılmasının ELAB=145-1120 MeV Enerji Aralığında Optik Model Analizleri, Yüksek Lisans Tezi, Süleyman Demirel Üniversitesi, Fen Bilimleri Enstitüsü, Isparta, Türkiye.
  • Woods, R.D., Saxon, D.S., 1954. Diffuse Surface Optical Model for Nucleon-Nuclei Scattering. Physical Review Letters, 95, 577-578.