Results of the First On-line Experiment of the Laser Ion Source

YANG Yong-Feng; ZHAO Zhi-Zheng; ZHENG Zhao-Miao; ZU Kai-Ling; WANG Xu-Dong; LIU Jun-Hui; ZHAO Xiao-Yan; WANG Tong-Qing; GUO Ying-Xiang; GUO Bin; LEI Xiang-Guo; JIN Gen-Ming; LUO Yi-Xiao; SHANG Ren-Cheng; XU Si-Da

Chinese Physics C> 2002, Vol. 26> Issue(2) : 134-140

Results of the First On-line Experiment of the Laser Ion Source

Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000, China1 Department of Physics, Tsinghua University, Beijing 100084, China2 Department of Physics, McGill University, Canada

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Abstract：
The importance of using a laser ion source in the on-line isotope separator, the principle of laser ion source, laser technique and the structure of hot capillary laser ion source and target chamber are introduced. A high repetition frequncy copper vapor laser and three dye lasers were used. The capillary is made of Nb with inside diameter of 1.7mm and effective length of 3cm. It was heated by 50—100A direct current and temperature of 1800—2700K can be achieved. The nuclear reaction channel used in the first on-line experiment is 50MeV/u ¹⁸O+^natTa→¹⁶⁷Yb(T_1/2=17.5min). A joint operation of accelerator, on-line isotope separator and laser system has been realized. A total separation efficiency of 0.2% is obtained by comparison of the measured yield of ¹⁶⁷Yb with the calculated yield of ¹⁶⁷Yb by using production cross-section, beam intensity, collection time and the thickness of target. A element selectivity of 3.2 is deduced from the ratio of the corresponding peak areas of ¹⁶⁷Yb and ¹⁶⁷Lu in the γ spectra of laser on and laser off. A new high spin isomer with long half-life of ¹⁶⁷Yb was found. The methods that may be used to improve the efficiency of laser ion source are discussed.

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[1]

. Fedoseyev V N, Jading Y, Josson O C et al. Z. Phys., 1995, A353: 9—112. Mishin VI, Fedoseyev V N, Kluge H J et al. Nucl. Instr. And Meth., 1993, B73: 550—560 3. ZHAO Zhi-Zheng. Nucl. Phys. Rew., 1998, 15: 10—14(in Chinese)(赵之正. 原子核物理评论, 1998, 15: 10—14)4. ZHAO Zhi-Zheng, YANG Yong-Feng, WANG Tong-Qing et al. HEP NP. 2001, 25(11): 1106(in Chinese)(赵之正, 杨永峰, 王同庆等. 高能物理与核物理, 2001, 25(11): 1106)5. ZHENG Zhao-Miao, ZHAO Zhi-Zheng, YANG Yong-Feng et al. Nucl. Tech. 1999, 22(1): 37—41(in Chinese)(郑兆妙, 赵之正, 杨永峰等. 核技术, 1999, 22(1): 37—41)6. ZHAO Zhi-Zheng, YANG Yong-Feng, ZHENG Zhao-Miao et al. HEP NP. 1998, 22(9): 844—852(in Chinese)(赵之正, 杨永峰, 郑兆妙等. 高能物理与核物理, 1998, 22(9): 844—852)

[1]	CUI Bao-Qun , TANG Bing , MA Yin-Jun , MA Rui-Gang , JIANG Cong , CHEN Li-Hua , JIANG Wei-Sheng . A Permanent Magnet Ion Source with Adjustable Magnetic Field. Chinese Physics C, 2008, 32(S1): 280-282.
[2]	CHEN Li-Hua , CUI Bao-Qun , JIANG Wei-Sheng , LI Ai-Ling . Calculation of Extraction System of Ion Sources. Chinese Physics C, 2008, 32(S1): 304-306.
[3]	J.Ohnishi , T.Nakagawa , Y.Higurashi , M.Kidera , H.Saito , A.Goto . Design of Magnet System for RIKEN Superconducting ECR Ion Source. Chinese Physics C, 2007, 31(S1): 37-40.
[4]	SUN Liang-Ting , FENG Yu-Cheng , WANG Hui , LI Jin-Yu , CAO Yun , ZHANG Xue-Zhen , MA Bao-Hua , LI Xi-Xia , SHANG Yong , HE Wei , ZHU Yu-Hua , GUO Xiao-Hong , ZHANG Zi-Mi , . Preliminary Results of the Updated LECR2 Source-LECR2M. Chinese Physics C, 2007, 31(S1): 118-122.
[5]	R.Gobin , P-Y.Beauvais , A.Ben Ismail , D.Bogard , O.Delferriere , D.De Menezes , R.Duperrier , Y.Gauthier , F.Harrault , P-A.Leroy , O.Tuske , D.Uriot . ECR Light Ion Sources at CEA/Saclay. Chinese Physics C, 2007, 31(S1): 46-50.
[6]	M.Kidera¹ , T.Nakagawa¹ , T.Kageyama¹ , Y.Higurashi¹ , H.Haba¹ , T.Aihara² , T.Ohki² , K.Kobayashi² , A.Goto¹ , Y.Yano¹ . Metal Ion Production with RIKEN 18 GHz-ECRIS. Chinese Physics C, 2007, 31(S1): 97-100.
[7]	M.Muramatsu¹ , 2 , A.Kitagawa² , Y.Iwata² , K.Yamamoto² , H.Ogawa² , S.Hojo² , Y.Sakamoto² , T.Honma² , W.Takasugi³ , M.Wakaisami³ , Y.Yoshida⁴ , T.Kubo⁵ , Y.Kato⁵ , S.Biri⁶ . Present Status of NIRS ECR Ion Sources. Chinese Physics C, 2007, 31(S1): 60-62.
[8]	D.P.May , F.P.Abegglen , G.J.Derrig , R.S.Olsen . The Texas A&M 14.5 GHz ECRIS. Chinese Physics C, 2007, 31(S1): 105-107.
[9]	R.Vondrasek , R.Scott , R.Pardo , . Solid Material Development with the Argonne National Laboratory ECR Ion Sources. Chinese Physics C, 2007, 31(S1): 101-104.
[10]	SUN Zhen-Wu , HUO Yu-Ping , LI Yu-Xiao , LI Tao . Study of Extraction Property of RF Ion Source. Chinese Physics C, 2006, 30(9): 902-906.
[11]	LONG Ji-Dong , SHI Jin-Shui , YU Hai-Jun , LIN Yu-Zheng . Study On Character of Backstreaming Ions Source. Chinese Physics C, 2005, 29(5): 501-506.
[12]	SUN Liang-Ting , CAO Yun , FENG Yu-Cheng , LI Jin-Yu , ZHAO Hong-Wei , ZHANG Zi-Min , WANG Hui , MA Bao-Hua , HE Wei , ZHAO HUAN-Yu , GUO Xiao-Hong . Experimental Study on Ion Beam Emittance of ECR Ion Source. Chinese Physics C, 2005, 29(12): 1179-1184.
[13]	ZHAO Zhi-Zheng , YANG Yong-Feng , WANG Tong-Qing , GUO Ying-Xiang , GUO Bin , FAN Hong-Mei , ZU Kai-Ling , WANG Xu-Dong , ZHENG Zhao-Miao , LIU Jun-Hui , LEI Xiang-Guo . Research of the Capillary Target-Ion Source System in On-Line Experiment. Chinese Physics C, 2001, 25(11): 1106-1112.
[14]	ZHANG ZiMin , ZHAO HongWei , ZHAO YuBin , ZHANG XueZhen , GUO XiaoHong , LIU ZhanWen . Production of Metallic Ions Beam in ECR Ion Source. Chinese Physics C, 2000, 24(10): 974-978.
[15]	TAO XiaoPing , PENG ShiXiang . Experimental Study on a New LaMo Cathode of High Current Ion Source. Chinese Physics C, 2000, 24(8): 767-769.
[16]	Zhao Yubin , Liu Zhanwei , Zhao Hongwei , Ding Junzhang , Cao Yun , Zhang Zimin , Zhang Xuezhen , Guo Xiaohong . A Single Charge State ECR Ion Source. Chinese Physics C, 1999, 23(11): 1125-1128.
[17]	Zhao Zhizheng , Yang Yongfeng , Zheng Zhaomiao , Zu Kailing , Wang Xudong , Cai Xichen , Shang Rencheng , Xu Sida , . The Element Selectivity and Laser Technique of the Laser Ion SourceUsed for On-line Isotope Separator. Chinese Physics C, 1998, 22(9): 844-852.
[18]	Guo Yingxiang , Zhu Shaofei , Zhou Xiaohong , Lei Xiangguo , Liu Zhong , Jin Hanjuan , Zhang Yuhu , Zhao Qingzhong , Sun Xiangfu , Luo Yixiao . First In-beam γ Spectroscopic Experiment at HIRFL. Chinese Physics C, 1997, 21(11): 976-981.
[19]	Xu Sida , Shang Rencheng , Zhang Shuming , Ye Zipiao , Zhang Wei , Zhao Zhizheng , Luo Yixiao . Experimental Results of the Off-Line System of He-Jet Laser Ion Source. Chinese Physics C, 1995, 19(12): 1068-1071.
[20]	MA MING-HSIU , YAO WEI , EAI KUEI-PEING . A NEW TYPE OF RADIOFREQUENCY METAL ION SOURCE. Chinese Physics C, 1978, 2(6): 544-549.

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YANG Yong-Feng, ZHAO Zhi-Zheng, ZHENG Zhao-Miao, ZU Kai-Ling, WANG Xu-Dong, LIU Jun-Hui, ZHAO Xiao-Yan, WANG Tong-Qing, GUO Ying-Xiang, GUO Bin, LEI Xiang-Guo, JIN Gen-Ming, LUO Yi-Xiao, SHANG Ren-Cheng, XU Si-Da and Results of the First On-line Experiment of the Laser Ion Source[J]. Chinese Physics C, 2002, 26(2): 134-140.

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Received: 2001-02-28
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Results of the First On-line Experiment of the Laser Ion Source

Corresponding author: YANG Yong-Feng,

Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000, China1 Department of Physics, Tsinghua University, Beijing 100084, China2 Department of Physics, McGill University, Canada

Received Date: 2001-02-28

Accepted Date: 1900-01-01

Available Online: 2002-02-05

Abstract: The importance of using a laser ion source in the on-line isotope separator, the principle of laser ion source, laser technique and the structure of hot capillary laser ion source and target chamber are introduced. A high repetition frequncy copper vapor laser and three dye lasers were used. The capillary is made of Nb with inside diameter of 1.7mm and effective length of 3cm. It was heated by 50—100A direct current and temperature of 1800—2700K can be achieved. The nuclear reaction channel used in the first on-line experiment is 50MeV/u ¹⁸O+^natTa→¹⁶⁷Yb(T_1/2=17.5min). A joint operation of accelerator, on-line isotope separator and laser system has been realized. A total separation efficiency of 0.2% is obtained by comparison of the measured yield of ¹⁶⁷Yb with the calculated yield of ¹⁶⁷Yb by using production cross-section, beam intensity, collection time and the thickness of target. A element selectivity of 3.2 is deduced from the ratio of the corresponding peak areas of ¹⁶⁷Yb and ¹⁶⁷Lu in the γ spectra of laser on and laser off. A new high spin isomer with long half-life of ¹⁶⁷Yb was found. The methods that may be used to improve the efficiency of laser ion source are discussed.

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Results of the First On-line Experiment of the Laser Ion Source

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