Temperature Dependence of Electron Screening at Low Energy

ZENG Sheng; LIAN Gang

Chinese Physics C> 2005, Vol. 29> Issue(12) : 1131-1135

Temperature Dependence of Electron Screening at Low Energy

ZENG Sheng ^, ,
LIAN Gang

China Institute of Atomic Energy,Beijing 102413,China2 Ruhr-Universitat,Bochum D-44780,Germany

Abstract
HTML
Reference
Related

PDF

Abstract：
For a deep understanding of the electron screening effects, we cooperated with the astrophysics group of Ruhr University to study the electron screening in the d(d,p)t reaction for the deuterated metals of groups 3 and 4 of the periodic table and the lanthanides, at a sample temperature T=200\textcelsius, using the D3+ beams provided by the 100kV accelerator of Dynamitron-Tandem-Laboratorium. The hydrogen solubility in the samples dropped to a level of a few percent (compared to T=20\textcelsius) and a large screening became observable. With the classical plasma model of Debye applied to the quasi-free metallic electrons, the deduced number of valence electrons per metallic atom agrees with the corresponding number from the Hall coefficient, for all metals investigated. Finally, we measured the screening for the metals Co and Pt as a function of sample temperature, in part between T=20\textcelsius and 340\textcelsius. The data agree with the Debye model; they represent the first observation of a temperature dependence of a nuclear cross section.

References

[1]

. BAI Xi-Xiang. Nucl. Phys. Rev., 2002, 19(1): 7(in Chinese)(白希祥.原子核物理评论，2002，19(1)：7)2. Krauss A, Becker H W, Trautvetter H P et al. Nucl. Phys.,1987, A465:1503. Krauss A, Becker H W, Trautvetter H P et al. Nucl. Phys.,1987, A467:2734. Engstler S, Krauss A, Neldner K et al. Phys. Lett., 1988,B202:1795. Rolfs C E, Rodney W S. Cauldrons in the Cosmos.Chicago:The University of Chicago Press, 19886. Langanke K, Shoppa T D, Barnes C A et al. Phys. Lett.,1996, B369: 2117. Liolios T E. Phys. Rev., 2001, C63: 045801-18. Assenbaum H J, Langanke K, Rolfs C. Z. Phys., 1987,A327:4619. Czerski K, Hulke A, Biller A et al. Europhys. Lett., 2001,54(4): 44910. Raiola F, Migliardi P, Gyürky G et al. Eur. Phys. J., 2002,A13: 37711. Raiola F, Migliardi P, Gang L et al. Phys. Lett., 2002,B547: 19312. Banomo C, Fiorentini G, Fulop Z et al. Nucl. Phys., 2003,A719:37c13. Greife U, Gorris F, Junker M et al. Z. Phys., 1995, A351:10714. Landolt-Brnstein Numerical Data and Functional Relationshipsin Science and Technology. Berlin: Springer-Verlag, 1959. 166

[1]	LI Xin , SHAO Ming , LI Cheng , CHEN Hong-Fang , TANG Ze-Bo . Correlation between Particle Ionization Energy Loss in MRPC and Its Signal Amplitude. Chinese Physics C, 2007, 31(4): 377-383.
[2]	XU Jun , CHEN Lie-Wen , LI Bao-An , MA Hong-Ru . Temperature Dependence of the Nuclear Symmetry Energy and Symmetry Free Energy. Chinese Physics C, 2006, 30(S2): 265-267.
[3]	LUO Shi-Yu , SHAO Ming-Zhu . Posibilities of Channelling Radiation as γ-Laser. Chinese Physics C, 2005, 29(2): 205-209.
[4]	MO Xiao-Hu . Correlation in Estimation of the Q Value. Chinese Physics C, 2005, 29(9): 831-837.
[5]	TAN Ji-Lian , WANG Xiao-Bing , WANG Shi-Jin , ZHU Guang-Wu , LU Zi-Wei , ZHANG Jin-Xia , LI Cun-Fan , WANG Zhu-Sheng , BAO Zhi-Qin , LIANG Jin-Bao , SHEN Si-Zhong , GAO Ping . Semiconductor Charged Particle Detector and Its Application in Space Physical Science. Chinese Physics C, 2003, 27(2): 150-153.
[6]	ZHOU Xiao-Hong , XU Fu-Rong , ZHANG Yu-Hu , ZHENG Yong . Configuration-Dependent Bands in ¹⁶⁹Re. Chinese Physics C, 2003, 27(11): 984-989.
[7]	HU Rong-Jiang , WU He-Yu , JIN Gen-Ming , ZHU Yong-Tai , LI Song-Lin , XIAO Zhi-Gang , WANG Hong-Wei , DUAN Li-Min , LI Zu-Yu , YIN Xu , WANG Su-Fang , ZHANG Bao-Guo , WEI Zhi-Yo , , , . Isospin Effect of Charged Particle Multiplicity in Intermediate Energy Heavy Ion Collisions. Chinese Physics C, 2003, 27(11): 990-994.
[8]	WANG Meng , WANG Jian-Song , GUO Zhong-Yan , XIAO Guo-Qing , ZHAN Wen-Long , LI Jia-Xing , SUN Zhi-Yu , CHEN Zhi-Qiang , WANG Wu-Sheng , TIAN Wen-Dong , MAO Rui-Shi . Isospin Effects on the Yield of LCPs in the Reaction of RNB. Chinese Physics C, 2002, 26(8): 803-808.
[9]	Xu Hushan , Zhu Yongtai , Chen Liewen , Gou Quanbu , Liu Hang , Wei Zhiyong , Zhang Yuhu , Wang Qi , Li Songlin , Lu Jun , Wu Zhongli , Xie Yuanxiang , Zhang Fengshou , Jin Genming . Target-Dependence of Neutron-Proton Ratio of the PLF Produced in Heavy Ion Collisions at Intermediate Energies. Chinese Physics C, 1998, 22(12): 1061-1067.
[10]	Lu Jun , Wang Qi , Xu Hushan , Li Songlin , Zhu Yongtai , Yin Xu , Fan Enjie , Zhang Yuhu , Li Zhichang , Zhao Kui , Lu Xiuqin , Hu Xiaoqing . The Angular Dependence of the Coherence Energy in Dissipative Reaction of ¹⁹F+⁵¹V. Chinese Physics C, 1997, 21(1): 15-20.
[11]	Ye Banjiao , Fan Yangmei , Wang Zhongmin , Han Rongdian , Mei Wen , Yu Xiaoqi , Yang Yanming , Han Renyu , Du Huaijiang , Xiao Zhenxi . A Multitelescope System for the Measurement of Differential (n,Charged Particle)Reaction Cross-sections. Chinese Physics C, 1994, 18(S1): 13-19.
[12]	Luo Chuanwang , Huang Tao , Guo Xinheng , Li Jinping , Lu Gongru . Model Dependence of the BSW Approach. Chinese Physics C, 1994, 18(7): 601-615.
[13]	XI Hong-Fei , ZHAN Wen-Long , ZHU Yong-Tai , GUO Zhong-Yan , HU Xiao-Qing , LIU Guan-Hua , ZHOU Jian-Qun , YIN Shu-Zhi , ZHAO You-Xong , WEI Zhi-Yong , FAN En-Jie . Light Charged Particle Correlation Measurement in Intermediate Energy Heavy Ion Reactions. Chinese Physics C, 1993, 17(3): 268-275.
[14]	YU Qing-Chang . Transport of Charged Particle Beam in Nonlinear Periodic Field. Chinese Physics C, 1993, 17(4): 305-309.
[15]	YAO Nai-Guo , CHEN Ting-Yang . A Three Dimensional Method to Reconstruct the Charged Particle Tracks in the Forward Spectrometer. Chinese Physics C, 1991, 15(9): 769-775.
[16]	LI Ming , SONG Hong-Qiu . The Temperature Dependence of Giant Resonances in High-Excited Nucleus. Chinese Physics C, 1991, 15(2): 140-149.
[17]	CHEN Ting-Yang , YAO Nai-Guo , HE Mao . THE TRACK SIMULATIONS OF CHARGED PARTICLES IN THE REAL MAGNETIC FIELDS. Chinese Physics C, 1990, 14(8): 673-676.
[18]	. CHARGED PARTICLE SPECTRA IN OXYGEN-INDUCED REACTIONS AT 14.6 AND 60GeV/NUCLEON. Chinese Physics C, 1989, 13(10): 865-869.
[19]	ZHANG Li , JIN Gen-Ming , WANG Da-Yan , ZHANG Bao-Guo , WANG Xi-Ming . ANALYSIS FOR ENERGY SPECTRA OF LIGHT PARTICLES EMITTED FROM ¹²C+⁶⁴Ni REACTION. Chinese Physics C, 1986, 10(5): 583-591.
[20]	Yu Qing-chang . THEORY OF NONLINEAR SPACE-CHARGE EFFECTS OF LOW ENERGY INTENSE CHARGED PARTICLE BEAMS. Chinese Physics C, 1980, 4(5): 579-587.

Access

Get Citation

ZENG Sheng and LIAN Gang. Temperature Dependence of Electron Screening at Low Energy[J]. Chinese Physics C, 2005, 29(12): 1131-1135.

ZENG Sheng and LIAN Gang. Temperature Dependence of Electron Screening at Low Energy[J]. Chinese Physics C, 2005, 29(12): 1131-1135. shu

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2005-03-28
Revised: 1900-01-01

Article Metric

Article Views(1611)
PDF Downloads(704)
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

Temperature Dependence of Electron Screening at Low Energy

Corresponding author: ZENG Sheng,

China Institute of Atomic Energy,Beijing 102413,China2 Ruhr-Universitat,Bochum D-44780,Germany

Received Date: 2005-03-28

Accepted Date: 1900-01-01

Available Online: 2005-12-05

Abstract: For a deep understanding of the electron screening effects, we cooperated with the astrophysics group of Ruhr University to study the electron screening in the d(d,p)t reaction for the deuterated metals of groups 3 and 4 of the periodic table and the lanthanides, at a sample temperature T=200\textcelsius, using the D3+ beams provided by the 100kV accelerator of Dynamitron-Tandem-Laboratorium. The hydrogen solubility in the samples dropped to a level of a few percent (compared to T=20\textcelsius) and a large screening became observable. With the classical plasma model of Debye applied to the quasi-free metallic electrons, the deduced number of valence electrons per metallic atom agrees with the corresponding number from the Hall coefficient, for all metals investigated. Finally, we measured the screening for the metals Co and Pt as a function of sample temperature, in part between T=20\textcelsius and 340\textcelsius. The data agree with the Debye model; they represent the first observation of a temperature dependence of a nuclear cross section.

HTML

Reference (1)

Temperature Dependence of Electron Screening at Low Energy

Abstract：

References

Access

Article Metrics

Metrics

通讯作者: 陈斌, bchen63@163.com

Email This Article