Studies on the HF States and the Negative-Parity Spectra of Even Even Cd Nuclei

XU Yan-Bing; LIAO Ji-Zhi

Chinese Physics C> 2003, Vol. 27> Issue(2) : 142-146

Studies on the HF States and the Negative-Parity Spectra of Even Even Cd Nuclei

XU Yan-Bing ^, ,
LIAO Ji-Zhi

Department of Physics,Sichuan University,Chengdu 610064,China

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Abstract：
Using modified surface delta interaction,enlarging the gds configuration space to include the 1h_11/2 states with the negative-parity,the deformed Hartree-Fock calculations for the seven nuclei (¹⁰⁴Cd,¹⁰⁶Cd,¹⁰⁸Cd,¹¹⁰Cd,¹¹²Cd,¹¹⁴Cd and ¹¹⁶Cd) are performed. The ground-state and some particle-hole excited configurations are obtained. The calculated results show that there exist form transition and shape coexistence from mass number 104 to 116,and that the single-particle energy spectra are different not only for different mass number but also for different configurations of nuclei. At the same time,the approximate angular momentum projected Hartree-Fock(PDHF) method is applied to nuclei ¹⁰⁸Cd and ¹¹⁰Cd. And both of their positive- and negative-parity bands are obtained. The results of calculated energy spectra are consistent with experimental spectra well.

References

[1]

. XU YanBing,LIU YingTai,LIAO JiZhi.HEP NP ,1999,23(6):561(in Chinese)(徐延冰,刘英太,廖继志.高能物理与核物理,1999,23(6):561)2. XU YanBing et al.Journal of Sichuan University (Natural Science Edition),1999,36(1):153(in Chinese)(徐延冰等.四川大学学报(自然科学版),1999,36(1):153)3. ZHENG RenRong,LIAO JiZhi.The Self consistent Field Method of Nucleus Symmetry.Chengdu:Sichuan University Press,1993,51—93(in Chinese)(郑仁蓉,廖继志.原子核对称性投影自洽场方法,成都:四川大学出版社,1993,51—93)4. LIAO JiZhi.HEP NP ,1989,13(4):357(in Chinese)(廖继志.高能物理与核物理,1989,13(4):357)5. MANG H J et al.Z .Physik,1976,A279:325—3316. Rath A K ,Praharaj C R ,Khadkikar S D .Phys Rev.,1993,C47:1990—20007. Tripathi P N et al.Phys.Rev.,1986,C34:1081—10938. Aage Behr, Ben R .Mottelson.Nuclear Structure,W .A .Benjamin,Inc.,1969,V1:145—1479. Audi G ,Wapstra A H .Nucl Phys.,A565(1):33—3410. Thorslund I et al.Nucl.Phys.,1993,A564:28511. Piiarinen M et al.Nucl.Phys.,1993,A565:671

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XU Yan-Bing and LIAO Ji-Zhi. Studies on the HF States and the Negative-Parity Spectra of Even Even Cd Nuclei[J]. Chinese Physics C, 2003, 27(2): 142-146.

XU Yan-Bing and LIAO Ji-Zhi. Studies on the HF States and the Negative-Parity Spectra of Even Even Cd Nuclei[J]. Chinese Physics C, 2003, 27(2): 142-146. shu

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Received: 2002-05-08
Revised: 1900-01-01

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Studies on the HF States and the Negative-Parity Spectra of Even Even Cd Nuclei

XU Yan-Bing ^,
LIAO Ji-Zhi

Corresponding author: XU Yan-Bing,

Department of Physics,Sichuan University,Chengdu 610064,China

Received Date: 2002-05-08
Accepted Date: 1900-01-01
Available Online: 2003-02-05

Abstract: Using modified surface delta interaction,enlarging the gds configuration space to include the 1h_11/2 states with the negative-parity,the deformed Hartree-Fock calculations for the seven nuclei (¹⁰⁴Cd,¹⁰⁶Cd,¹⁰⁸Cd,¹¹⁰Cd,¹¹²Cd,¹¹⁴Cd and ¹¹⁶Cd) are performed. The ground-state and some particle-hole excited configurations are obtained. The calculated results show that there exist form transition and shape coexistence from mass number 104 to 116,and that the single-particle energy spectra are different not only for different mass number but also for different configurations of nuclei. At the same time,the approximate angular momentum projected Hartree-Fock(PDHF) method is applied to nuclei ¹⁰⁸Cd and ¹¹⁰Cd. And both of their positive- and negative-parity bands are obtained. The results of calculated energy spectra are consistent with experimental spectra well.