THE PYGMY RESONANCE AND SPIN-ISOSPIN OSCILLATION IN THE MASS REGION (A≤208)

Fu De-ji; Xia Ke-ding

Chinese Physics C> 1980, Vol. 4> Issue(2) : 228-235

THE PYGMY RESONANCE AND SPIN-ISOSPIN OSCILLATION IN THE MASS REGION (A≤208)

Fu De-ji ,
Xia Ke-ding

Abstract
HTML
Reference
Related

PDF

Abstract：
The p-h calculation of 1^- states and its E1 transition probabilities in Pb²⁰⁸ ismade with different types of two-body forces. The same, calculation is made for Hg²⁰⁰,Pt¹⁹⁴, W¹⁸⁴ using BCS wave function as basis vectors. The agreement between ob-servation and calculation is quite well in the general trend. In addition the calcu-lations demonstrate the de-coupling of E1 transitions of low l-configurations fromthe giant dipole resonance, the spin-isospin oscillation at lower energy and the effectof spin-orbit coupling force on the pygmy resonance.

References

[1]

G. A. Bartholowmew, E. D, Earle, A. J. Ferguson, J. W. Knowles and M. A. Lone, Advances in Nuclear Physics, (Plenum Press, New York), Vol. 7(1973), p. 229.[2] A. M. Lane, Proc. Second Int.Symp. on Neutron Capture Gamma Ray Spertroecopy and Related Topic, 1974, Petten, the Netherlands, p. 31.[3] B.Gyarmati, A. M. Lane and J. Zimanyi, Physics Letter, 50B(1974), 316.[4] A.M. Lane, Annals of Physics, 63(1971), 171.

[1]	FENG Zhao-Qing , ZHANG Feng-Shou , HUANG Xi , JIN Gen-Ming , LI Wen-Fei . Isospin Effect of Multifragmentation and Critical Phenomena in Finite Nuclei. Chinese Physics C, 2005, 29(6): 577-582.
[2]	LIU Jian-Feng , JIA Min , ZHAO Wei-Juan . Study on the Giant Dipole Resonance Model for γ Production Mechanisms Induced by Fast Nutrons in the Nuclear Mass Region 180≤A≤210. Chinese Physics C, 2003, 27(5): 430-435.
[3]	ZHANG Li , HU QingYuan , ZHAO JinHua , ZHENG JiWen , LI ZhanKui , LI ShiHong , GAN ZaiGuo , YU Yong , FAN HongMei , GUO Bin , ZHANG TianMei , WANG ChunFang , WANG TongQing , JIN GenMing , PU YueHu , , , , . γ Scheme Following ²⁰⁸Hg β^－ Decay. Chinese Physics C, 2000, 24(9): 823-828.
[4]	ZHU Sheng-Jiang . Research on Octupole Deformation of Neutron-Rich Odd-A Nuclei and High Spin States of Some Neutron-Deficient Nuclei in A=130 Region. Chinese Physics C, 2000, 24(S1): 14-20.
[5]	WANG JianSong , SHEN WenQing , MA YuGang , CAI YanHuang , FENG Jun , FANG DeQing , CAI XiangZhou , SU QianMin . . Chinese Physics C, 2000, 24(3): 256-261.
[6]	Zhang Changhua , Gu Jinnan . Nuclear Structure in Lead Region (Ⅱ) Non-unique First Forbidden Beta Decay for Nuclei ²⁰⁸Tl,²⁰⁸Pb and ^206—208Hg. Chinese Physics C, 1997, 21(9): 812-817.
[7]	Zhong Jiquan , Wen Wanxin , Jin Genming , Di Tori . Pre-equilibrium GDR Built on Dinucleus. Chinese Physics C, 1995, 19(12): 1114-1118.
[8]	Gu Jinnan . The Structure of ²⁰⁸Tl. Chinese Physics C, 1994, 18(S1): 75-80.
[9]	Zhang Li , Jin Genming , Zhao Jinhua , Yang Weifan , Yang Yongfeng , Zhao Zhizheng , Zheng Jiwen , Sun Xiurong , Wang Jicheng , Li Zongwei , Qin Zhi , Guo Guanghui . Identification of ²⁰⁸Hg. Chinese Physics C, 1994, 18(4): 296-301.
[10]	Gu Jinnan . Structure of ²⁰⁸Tl. Chinese Physics C, 1994, 18(S4): 429-434.
[11]	Zhang Li , Jin Genming , Zhao Jinhua , Yang Weifan , Yang Yongfeng , Zhao Zhizheng , Zheng Jiwen , Sun Xiurong , Wang Jicheng , Li Zongwei , Qin Zhi , Guo Guanghui . Identification of ²⁰⁸Hg. Chinese Physics C, 1994, 18(Z1): 1-8.
[12]	CAI Yan-Huang . The Soft Dipole Resonance Extremely Neutron Rich Nucleus ¹¹Li. Chinese Physics C, 1993, 17(9): 839-844.
[13]	ZHANG Li , JIN Gen-Ming , ZHAO Jin-Hua , YANG Wei-Fan , YANG Yong-Feng , ZHAO Zhi-Zheng , ZHENG Ji-Wen , SUN Xiu-Rong , LI Zong-Wei , QIN Zhi , WANG Ji-Cheng , GUO Guang-Hui . New Neutron-Rich Isotope ²⁰⁸Hg. Chinese Physics C, 1992, 16(8): 767-768.
[14]	DAI Zi-Gao , FU De-Ji , LIANG Shi-Dong , XU Gong-Ou . The Solution of the Interacting SPD Boson Model with Continuous Variables Representation on Giant Dipole Resonances. Chinese Physics C, 1991, 15(6): 569-576.
[15]	REN Zhong-Zhou , XU Gong-Ou . ALPHA CLUSTERING WITH PAIRING FORCES DEPENDENT OF SPIN AND ISOSPIN. Chinese Physics C, 1990, 14(1): 92-96.
[16]	CAO Wen-Qiang , WANG Shun-Jin . ANALYSING PHOTONUCLEAR REACTION CROSS SECTIONS OF GIANT DIPOLE RESONANCES BY USING EXTENDED EXCITON MODEL BEING TREATED APPROXIMATELY. Chinese Physics C, 1989, 13(6): 560-568.
[17]	LI Zhu-Xia , ZHANG Xi-Zhen . A STUDY OF THE ISOSCALAR GIANT RESONANCE IN ⁴⁰Ca. Chinese Physics C, 1986, 10(3): 330-334.
[18]	FANG Bao , XIA Ke-Ding , FU De-Ji , XU Gong-Ou . THE STUDY OF QUADRUPOLE MOMENT, OCTUPOLE TRANSITION AND TRANSITION DENSITY OF ²⁰⁸Pb 3^－STATE—— THE APPLICATION OF GENERATOR COORDINATE METHOD (GCM). Chinese Physics C, 1984, 8(4): 461-469.
[19]	CAI Yan-Huang , FU De-Ji , XIA Ke-Ding , XU Gong-Ou . EFFECT OF MULTIPOLE VIBRATION ON M1 TRANSITION OF 1⁺ STATES IN ²⁰⁸Pb. Chinese Physics C, 1984, 8(5): 611-618.
[20]	YU YOU-WEN , TZU HSI-CHUEN , WU WEI-FANG . FINE STRUCTURE OF THE GIANT DIPOLE RESONACE IN ¹⁶O. Chinese Physics C, 1978, 2(3): 280-284.

Access

Get Citation

Fu De-ji and Xia Ke-ding. THE PYGMY RESONANCE AND SPIN-ISOSPIN OSCILLATION IN THE MASS REGION (A≤208)[J]. Chinese Physics C, 1980, 4(2): 228-235.

Fu De-ji and Xia Ke-ding. THE PYGMY RESONANCE AND SPIN-ISOSPIN OSCILLATION IN THE MASS REGION (A≤208)[J]. Chinese Physics C, 1980, 4(2): 228-235. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 1978-09-04
Revised: 1900-01-01

Article Metric

Article Views(2800)
PDF Downloads(335)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

THE PYGMY RESONANCE AND SPIN-ISOSPIN OSCILLATION IN THE MASS REGION (A≤208)

Fu De-ji
Xia Ke-ding

Received Date: 1978-09-04
Accepted Date: 1900-01-01
Available Online: 1980-04-05

Abstract: The p-h calculation of 1^- states and its E1 transition probabilities in Pb²⁰⁸ ismade with different types of two-body forces. The same, calculation is made for Hg²⁰⁰,Pt¹⁹⁴, W¹⁸⁴ using BCS wave function as basis vectors. The agreement between ob-servation and calculation is quite well in the general trend. In addition the calcu-lations demonstrate the de-coupling of E1 transitions of low l-configurations fromthe giant dipole resonance, the spin-isospin oscillation at lower energy and the effectof spin-orbit coupling force on the pygmy resonance.