Sakarya Üniversitesi | Nükleer Fizik Araştırma Grubu

Projede, periyodik tablonun farklı kütle bölgelerinde bulunan tek-A’lı deforme çekirdeklerdeki elektrik dipol (E1) uyarılmalarını teorik olarak açıklamak ve sistematik özelliklerini ortaya koymak amacıyla Öteleme ve Galileo Değişmez Kuaziparçacık Fonon Nükleer Modeli (TGI-QPNM) formüle edilmiş ve FORTRAN programlama dilinde bilgisayar kodu geliştirilmiştir.

Tek-A’lı çekirdek Hamiltoniyeninin ortalama alan yaklaşımı nedeniyle bozulan öteleme ve Galileo simetrileri Pyatov–Salamov restorasyon yöntemiyle onarılmıştır. TGI-QPNM ile deneysel dipol spektrumları bilinen ¹³⁹La, ¹⁴¹Pr, ¹⁴³Nd, ^151,153Eu, ^155,157Gd, ¹⁵⁹Tb, ^161,163Dy, ¹⁶⁵Ho, ¹⁶⁷Er, ¹⁶⁹Tm, ¹⁷⁵Lu, ¹⁸¹Ta, ²³⁵U ve ²³⁹Pu çekirdeklerinin 2–4 MeV bölgesindeki E1 uyarılmaları hesaplanarak deneysel verilerle karşılaştırılmıştır.

Ayrıca nadir toprak ve aktinit bölgelerindeki seçilmiş La, Eu, Gd, Dy, Ho, Er, Lu, Th ve U izotop zincirleri için 2–20 MeV enerji aralığındaki düşük enerjili dipol durumları, Pygmy Dipol Rezonans ve Dev Dipol Rezonans özellikleri ilk kez aynı mikroskobik çerçevede sistematik olarak incelenmiştir.

Ana Sayfa

TÜBİTAK 1001 Projesi

Tek Kütle Numaralı Deforme Çekirdeklerde Elektrik Dipol (E1) Titreşimlerinin Teorik Olarak Araştırılması

Projenin Özeti

Amaç ve yöntem

E1 uyarılmalarının mikroskobik açıklaması

TGI-QPNM hesaplamaları

Araştırma ekibi

Doç. Dr. Emre TABAR

Prof. Dr. Hakan YAKUT

Yayın ve bildiriler

Proje çıktıları

The electric dipole characteristics of well-deformed 171,173Yb

A theoretical analysis of the electromagnetic dipole response in odd-A thorium isotopes

Microscopic calculation of the electromagnetic dipole strength for 239,243Pu isotopes

Scissors mode and effects of the low-lying E1 excitations on the dipole distributions in 175Lu

Pygmy and isovector giant dipole resonance in 175Lu

Theoretical description of pygmy and giant dipole resonances in 237Np

Electromagnetic dipole transitions below 4 MeV in odd-neutron 161,163Dy

Study of the high lying electric dipole excitations in odd-A 153–159Eu isotopes

Systematics of electric dipole excitations for odd-mass 233–239U isotopes

Investigation of the electric dipole (E1) excitations in 181Ta nucleus

Translational and Galilean Invariant Quasiparticle Phonon Nuclear Model (TGI-QPNM) for electric dipole (E1) transitions in odd-mass deformed nuclei

Comparission of E1 Response of 154Sm and 155Sm in the Pygmy Dipole Resonance (PDR) Region

A Theoretical Study of the Low-Lying Electric Dipole (E1) Strength in 163Dy within the QRPA

Giant dipole resonance (GDR) in 235U

The Investigation of the Giant Dipole Resonance (GDR) Characteristics for the 141Pr Nucleus

Electric Dipole (E1) Strength in 139La Nuclei Below the Neutron-Separation Energy

Low-Energy Electric Dipole Strength in 241Pu

Low-Lying Electric and Magnetic Dipole Response of 143Nd

Theoretical Study of the Giant Dipole Resonance in the 233Th Nucleus

Calculation of Electric Dipole (E1) Resonance in 167Er from Threshold to 22 MeV

The Comparison of the Low-Lying Dipole States in the N=144 Nuclei

Theoretical Study of Giant Dipole Resonance in 159Tb

Electric Dipole Excitations in 233U within TGI-QPNM

Microscopic Investigation of Low- and High-Lying Electric Dipole Resonance in Odd-Mass 153Eu

A Theoretical Study of the Low-Lying Electric Dipole (E1) Strength in 163Dy within the QRPA

Electric Dipole (E1) Strength in 139La Nuclei Below the Neutron-Separation Energy

The Investigation of the Giant Dipole Resonance (GDR) Characteristics for the 141Pr Nucleus

Microscopic Description of the Giant Dipole Resonance (GDR) Mode in 165Ho

Comparison of E1 Response of 154Sm and 155Sm in the Pygmy Dipole Resonance (PDR) Region

The electric dipole characteristics of well-deformed ^171,173Yb

Microscopic calculation of the electromagnetic dipole strength for ^239,243Pu isotopes

Scissors mode and effects of the low-lying E1 excitations on the dipole distributions in ¹⁷⁵Lu

Pygmy and isovector giant dipole resonance in ¹⁷⁵Lu

Theoretical description of pygmy and giant dipole resonances in ²³⁷Np

Electromagnetic dipole transitions below 4 MeV in odd-neutron ^161,163Dy

Study of the high lying electric dipole excitations in odd-A ^153–159Eu isotopes

Systematics of electric dipole excitations for odd-mass ^233–239U isotopes

Investigation of the electric dipole (E1) excitations in ¹⁸¹Ta nucleus

Comparission of E1 Response of ¹⁵⁴Sm and ¹⁵⁵Sm in the Pygmy Dipole Resonance (PDR) Region

A Theoretical Study of the Low-Lying Electric Dipole (E1) Strength in ¹⁶³Dy within the QRPA

Giant dipole resonance (GDR) in ²³⁵U

The Investigation of the Giant Dipole Resonance (GDR) Characteristics for the ¹⁴¹Pr Nucleus

Electric Dipole (E1) Strength in ¹³⁹La Nuclei Below the Neutron-Separation Energy

Low-Energy Electric Dipole Strength in ²⁴¹Pu

Low-Lying Electric and Magnetic Dipole Response of ¹⁴³Nd

Theoretical Study of the Giant Dipole Resonance in the ²³³Th Nucleus

Calculation of Electric Dipole (E1) Resonance in ¹⁶⁷Er from Threshold to 22 MeV

Theoretical Study of Giant Dipole Resonance in ¹⁵⁹Tb

Electric Dipole Excitations in ²³³U within TGI-QPNM

Microscopic Investigation of Low- and High-Lying Electric Dipole Resonance in Odd-Mass ¹⁵³Eu

A Theoretical Study of the Low-Lying Electric Dipole (E1) Strength in ¹⁶³Dy within the QRPA

Electric Dipole (E1) Strength in ¹³⁹La Nuclei Below the Neutron-Separation Energy

The Investigation of the Giant Dipole Resonance (GDR) Characteristics for the ¹⁴¹Pr Nucleus

Microscopic Description of the Giant Dipole Resonance (GDR) Mode in ¹⁶⁵Ho

Comparison of E1 Response of ¹⁵⁴Sm and ¹⁵⁵Sm in the Pygmy Dipole Resonance (PDR) Region