Pseudo-mirror nuclei in the mass regions A~ 170 and A~ 200

Yıl 2018, Cilt: 22 Sayı: 6, 1927 - 1930, 01.12.2018

Bahadir Saygı

https://doi.org/10.16984/saufenbilder.463978

Cited By: 1

Öz

The concept of
pseudo-mirror nuclei is based on N_πN_ν scheme introduced
as an extension of NpNnscheme. The N_πN_ν scheme
tells us that if two nuclei from different mass region have equal number of
integrated n-p interaction than the experimental observables E(2+), E(4⁺)/E(2⁺)
and B(E2; 2⁺→ 0⁺) are expected to be almost equal,
therefore equal number of n-p interaction build similar level schemes up to
certain spin quantum numbers. Pseudo-mirror nuclei have been introduced for the
first time in the mass regions A ~ 100 and A ~ 130 for Mo, Zr, Nd and Ce
nuclei.  Later, a systematic work carried
out over a broad region of Segre chart showed
that not only the excitation energies but also related B(E2) values of excited
states in Pseudo-mirror nuclei (PMN) are in good agreement. In the present
work, we present new pseudo-mirror nuclei in the mass region A ~ 170 and A ~
200 for the first time. 

Anahtar Kelimeler

Pseudo-mirror nuclei, n-p interaction, NpiNnü S

Kaynakça

• [1] E. Rutherford, “LXXIX. The scattering of α and β particles by matter and the structure of the atom,” Philosophical Magazine Series 6, vol. 21, no. 125, pp. 669-688, 1911.
• [2] P.W. Anderson, “More is different,” Science, vol. 177, no. 4047, pp. 393, 1972.
• [3] W. Heisenberg, “Über den Bau der Atomkerne. I,” Zeitschrift für Physik A Hadrons and Nuclei, vol. 77, pp. 1, 1932.
• [4] J. Ekman et.al, “The A = 51 mirror nuclei 51Fe and 51Mn,” The European Journal of Physics A, vol. 9, pp. 13–17, 2000.
• [5] D. Tonev et.al, “Transition rates and nuclear structure changes in mirror nuclei 47Cr and 47V,” Physical Review C, vol. 65, pp. 034314, 2002.
• [6] R. Wirowski et.al, “Valence mirror nuclei,” Journal of Physics G: Nuclear Physics, vol. 14, pp. L195, 1988.
• [7] R.F. Casten et.al, “Simplified shell model calculations for valence mirror nuclei,” Nuclear Physics A, vol. 514, pp. 252, 1990.
• [8] J. Yan et.al, “Proton-neutron symmetry in valence mirror nuclei,” Physical Review C, vol. 42, pp. 743, 1990.
• [9] M. Schimmer et.al, “The valence mirror nuclei 114Sn and 146Gd,” Nuclear Physics A, vol. 569, pp. 458, 1994.
• [10] R. Moscrop et.al, “Pseudo-mirror nuclei with A=100 and A=130,” Journal of Physics G: Nuclear Physics, vol. 14, pp. L189, 1989.
• [11] R.F. Casten, “NpNn systematics in heavy nuclei,” Nuclear Physics A, vol. 443, pp. 1, 1985.
• [12] B. Sayğı, “Investigation of the B(E2) systematics in pseudo-mirror nuclei,” Journal of Physics G: Nuclear Physics, vol. 45, pp. 095104, 2018.
• [13] J. Blachot, “Nuclear Data Sheets for A = 108*,” Nuclear Data Sheets, vol. 90, pp. 135, 2000.
• [14] J. Katakura and Z.D. Wu, “Nuclear Data Sheets for A = 124*,” Nuclear Data Sheets, vol. 109, pp. 1655, 2008.
• [15] S.L. King et.al, “First observation of excited states in the neutron deficient nuclei 164Os and 166Os,” Physical Review C, vol. 62, pp. 067301, 2000.
• [16] J.J. Ressler et.al, “Isomeric decay of 208Ra,” Physical Review C, vol. 71, pp. 014302, 2005.
• [17] J.F.C. Cocks et.al, “Gamma-ray spectroscopy of neutron-deficient Ra isotopes,” Journal of Physics G: Nuclear Physics, vol. 25, pp. 839, 1999.
• [18] G.D. Dracoulis et.al, “Shape coexistence from the structure of the yrast band in 174Pt,” Physical Review C, vol. 44, pp. R1246, 1991.
• [19] R.B.E. Taylor et.al, “Gamma decay of excited states in 198Rn identified using correlated radioactive decay,” Physical Review C, vol. 59, pp. 673, 1999.
• [20] S. Raman et.al, “Transition probability from the ground to the first-excited 2+ state of even-even nuclides,” Atomic Data and Nuclear Data Tables, vol. 78, pp. 1, 2001.
• [21] P. Möller et.al, “Nuclear ground-state masses and deformations: FRDM(2012),” Atomic Data and Nuclear Data Tables, vol. 109-110, pp. 1, 2016.
• [22] A. De-Shalit and M. Goldhaber, “Mixed configurations in nuclei,” Physical Review, vol. 92, pp. 1211, 1953.
• [23] I. Talmi, “Effective interactions and coupling schemes in nuclei,” Reviews of Modern Physics, vol. 34, pp. 704, 1962.
• [24] P. Federman and S. Pittel, “Towards a unified microscopic description of nuclear deformation,” Physics Letter B, vol. 69, pp. 385, 1977.
• [25] P. Federman and S. Pittel, “Unified shell-model description of nuclear deformation,” Physical Review C, vol. 20, pp. 820, 1979.