γ Degree of Freedom for the <SUP>178</SUP>Hf Isomeric State

TU Ya; CHEN Yong-Shou; GAO Zao-Chun

Chinese Physics C> 2006, Vol. 30> Issue(S2) : 109-111

γ Degree of Freedom for the ¹⁷⁸Hf Isomeric State

China Institute of Atomic Energy, Beijing 102413, China2 Institute of Theoretical Nuclear Physics, Chinese Academy of Sciences, Beijing 100080, China

Abstract
HTML
Reference
Related

PDF

Abstract：
We have perfomed calculations for the six rotational bands in ¹⁷⁸Hf which have been found experimentally by using triaxial projected shell model (TPSM). The γ band can be well reproduced with γ=22°. By using the same γ value, the present calculations predict a γ-band built on ^178m2Hf(16⁺) state, and its band head (I=14⁺)lies about 900keV above the ^178m2Hf(16⁺) state. This 14⁺ state should be rather easily excited from the 16⁺ isomeric state because of the same intrinsic configuration of these two states. It is hope that the 14⁺ state could have more probable chance to decay into the ground state band than that from the ^178m2Hf(16⁺) state, and then to realize the de-excitation of the isomeric state.

References

[1]

. Apranamian A, Sun Y. Nature Phys., 2005, 1: 80-812. Walker P M, Carroll J J. Phys. Today, 2005, 58: 39-443. Walker P M, Dracoulis G D. Nature, 1999, 399: 35-404. Sherman M S. Science Technol. Rev., 2005, July/August:24-255. Ahmad I, Banar J C, Becker J A et al. Phys. Rev., 2005,C71: 0243116. Sheikh J A, Hara K. Phys. Rev. Lett., 1999, 82: 39687. GAO Z C, SUN Y, CHEN Y S. Phys. Lett., 2006, B634:1958. Jain, Sheline, Sood. Rev. Mod. Phys., 1990, 62: 4009. Hayes A B, Cline D, WU C Y et al. Phys. Rev. Lett., 2002,89: 24250110. Mullins S M, Dracoulis G D, Byrne A P et al. Phys. Lett.,1997, B400: 40111. Mullins S M, Dracoulis G D, Byrne A P et al. Phys. Lett.,1997, B393: 279-284

[1]	Mushtaq Abed Al-Jubbori , Khalaf Ajaj Al-Mtiuty , Khaliel. I. Saeed , Fadhil I. Sharrad . Properties of even ^168-178Hf isotopes using IBM-1 and SEF. Chinese Physics C, 2017, 41(8): 084103. doi: 10.1088/1674-1137/41/8/084103
[2]	ZHOU Feng-Qun , ZHAI Zi-Nan , TUO Fei , LUO Jun-Hua , KONG Xiang-Zhong . A Formula Used to Calculate Cross Section of Isomerous State with Characteristic Gamma-Ray of Ground State in a Special Case and Its Application. Chinese Physics C, 2007, 31(7): 625-628.
[3]	CHOU Jiu-Zi , YAN Xin-Yi , HE Ming , DONG Ke-Jun , ZHANG Chun-Hua , ZHANG Jin-Song , DENG Hui , CHEN Xi-Lin , JIANG Shan . Measurent of cross-section for ¹⁸¹Hf(n,γ)¹⁸²Hf Reaction. Chinese Physics C, 2005, 29(7): 648-650.
[4]	XU Yan-Bing , LIAO Ji-Zhi . Studies on the HF States and the Negative-Parity Spectra of Even Even Cd Nuclei. Chinese Physics C, 2003, 27(2): 142-146.
[5]	WANG Xu-Dong , XIE Yuan-Xiang , XU Shu-Wei , LI Zhan-Kui , GUO Bin , LENG Chang-Geng , WANG Chun-Fang , YU Yong . (EC+β⁺) Decay of ¹³³Sm and 1.1s Isomer of ¹³³Pr. Chinese Physics C, 2002, 26(8): 797-802.
[6]	GAN Zai-Guo , LIU Zhong , ZHANG Yu-Hu , PAN Qiang-Yan . A New Isomer State in ¹³⁶Ba. Chinese Physics C, 2002, 26(8): 814-817.
[7]	ZHANG YuHu . Signature Inversion in the Rotational Bands of Odd-Odd ¹⁷⁸Ir. Chinese Physics C, 2000, 24(12): 1123-1130.
[8]	FENG XiChen , GUO YingXiang , ZHOU XiaoHong , LEI XiangGuo , HUANG WenXue , HE JianJun , ZHU ShaoFei , LIU Zhong , ZHANG YuHu , LUO YiXiao , WEN ShuXian , YUAN GuanJun , WU XiaoGua . Investigation of the [лh_9/2vi_13/2^－1] 10^－ Isomer in ²⁰⁶At. Chinese Physics C, 2000, 24(4): 359-363.
[9]	ZHOU XiaoHong . Identification and Study of a High-Spin Isomer in ¹⁴³Nd. Chinese Physics C, 2000, 24(5): 408-413.
[10]	Liu Zhong , Sun Xiangfu , Guo Yingxiang , Lei Xiangguo , Chen Xinfeng , Zhou Xiaohong , Zhang Yuhu , Jin Hanjuan , Luo Yixiao , Wen Shuxian , Yuan Guanjun , Li Guangsheng , Yang Chunxiang , Liu Xiang . Lifetime Measurement of the Negative-Parity Isomers in ¹¹⁷Xe. Chinese Physics C, 1997, 21(10): 881-885.
[11]	Zhong Jiquan , Zhang Xueqian . Non-axial Parameter γ Effects on Even-Even Er Isotopes. Chinese Physics C, 1997, 21(2): 176-179.
[12]	Huang Xiaolong , Cai Dunjiu . Isomeric Cross Section Ration for (n,2n)Reaction. Chinese Physics C, 1997, 21(5): 453-457.
[13]	DIV align , Zhang Yuhu . Study of High Spin Isomer and its Decay Level Scheme of Doubly Odd ¹⁴⁴Pm Nucleus. Chinese Physics C, 1996, 20(5): 385-393.
[14]	DI Yao-Min . g-Boson Degree of Freedom in Vibrational Regions. Chinese Physics C, 1991, 15(7): 660-668.
[15]	WANG Bing , SHEN Wen-Qing , FENG Jun , ZHU Yong-Tai , FENG En-Pu . THE NEUTRON EXCESS DEPENDENCE OF TOTAL REACTION CROSS SECTION IN THE INTERMEDIATE ENERGY DOMAIN. Chinese Physics C, 1989, 13(6): 553-559.
[16]	GE Ling-Xiao , LIU Jian-Ye , WANG Shun-Jin . RELAXATION OF SINGLE PARTICLE DEGREES OF FREEDOM IN HEAVY ION COLLISION. Chinese Physics C, 1989, 13(3): 245-251.
[17]	HUANG Chao-Hui , WANG De-An , MA Wei-Xing . THE QUARK DEGREES OF FREEDOM IN HIGH ENERGY COMPOSITE PARTICLE SCATTERING. Chinese Physics C, 1989, 13(6): 535-538.
[18]	DI Yao-Min , SU Yao-Zhong . THE DEGREE OF FREEDOM OF F-SPIN AND NUCLEAR ROTATIONAL SPECTRA. Chinese Physics C, 1987, 11(2): 277-281.
[19]	Jiang Dong-xing . RELAXATION OF THE NEUTRON EXCESS DEGREE OF FREEDOM IN DEEP INELASTIC REACTIONS INDUCED BY HEAVY IONS. Chinese Physics C, 1980, 4(4): 516-530.
[20]	Fission group , Nuclear physics laboratory . THE SHAPE ISOMER ^240mPu. Chinese Physics C, 1978, 2(1): 83-86.

Access

Get Citation

TU Ya, CHEN Yong-Shou and GAO Zao-Chun. γ Degree of Freedom for the ¹⁷⁸Hf Isomeric State[J]. Chinese Physics C, 2006, 30(S2): 109-111.

TU Ya, CHEN Yong-Shou and GAO Zao-Chun. γ Degree of Freedom for the ¹⁷⁸Hf Isomeric State[J]. Chinese Physics C, 2006, 30(S2): 109-111. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2006-10-16
Revised: 1900-01-01

Article Metric

Article Views(3412)
PDF Downloads(695)
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

γ Degree of Freedom for the ¹⁷⁸Hf Isomeric State

Corresponding author: TU Ya,

China Institute of Atomic Energy, Beijing 102413, China2 Institute of Theoretical Nuclear Physics, Chinese Academy of Sciences, Beijing 100080, China

Received Date: 2006-10-16
Accepted Date: 1900-01-01
Available Online: 2006-01-03

Abstract: We have perfomed calculations for the six rotational bands in ¹⁷⁸Hf which have been found experimentally by using triaxial projected shell model (TPSM). The γ band can be well reproduced with γ=22°. By using the same γ value, the present calculations predict a γ-band built on ^178m2Hf(16⁺) state, and its band head (I=14⁺)lies about 900keV above the ^178m2Hf(16⁺) state. This 14⁺ state should be rather easily excited from the 16⁺ isomeric state because of the same intrinsic configuration of these two states. It is hope that the 14⁺ state could have more probable chance to decay into the ground state band than that from the ^178m2Hf(16⁺) state, and then to realize the de-excitation of the isomeric state.