Experimental Investigation for the Decay Rate of Orthopositronium

ZHANG Tian-Bao; YANG Guang-Ming; GUO Bao-Nian; WANG Hai-Dong

Chinese Physics C> 1992, Vol. 16> Issue(7) : 577-581

Experimental Investigation for the Decay Rate of Orthopositronium

Institute of High Energy Physics,Academia,Beijing 100080

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Abstract：
A method for the measurement of the vacuum decay rate λ₀ of orthopositronium is suggested and the preliminary result is obtained λ₀=7.034±0.013μs^－1.The possibility for the improvement of the experiment has been discussed.

References

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S. Hatamian, R. S. Conti A. Rich, Phys. Rev. Letters, v58(1987), 1833.[2] S. Asai, S. Orito, T. Sanuti, M. Yasuda T. Yokoi, Phys. Rev. Letters, v66(1991), 1298.[3] Chang Tianbao, Tang Hsiowei Li Yaoqing, Physics Letters, V157B(1985), 357.[4] G. S. Adkins, Ann. Phys. (N. Y.), 146(1983), 78.[5] J. S. Nico, D. W. Gidley, A. Rich P. W. Zitzewitz, Phys. Rev. Letters, V65(1990), 1344.[6] D. W. Gidley, et al., Phys. Rev. Letters, V36(1978), 737.[7] C. 1. Westbroak, et al，Phys. Rev. Letters, V58(1987), 1328.[8] D. W. Gidley, et al., Phys. Letters. V69A(1978), 97.[9] Chang Tianbao, Xu Ming Zheng Xiantao, Physics Letters, V126A(1987), 189.[10] G. S. Adkins, et al., Phys. Rev,, V28A(1983), 1164.

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ZHANG Tian-Bao, YANG Guang-Ming, GUO Bao-Nian and WANG Hai-Dong. Experimental Investigation for the Decay Rate of Orthopositronium[J]. Chinese Physics C, 1992, 16(7): 577-581.

ZHANG Tian-Bao, YANG Guang-Ming, GUO Bao-Nian and WANG Hai-Dong. Experimental Investigation for the Decay Rate of Orthopositronium[J]. Chinese Physics C, 1992, 16(7): 577-581. shu

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Received: 1900-01-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Experimental Investigation for the Decay Rate of Orthopositronium

Corresponding author: ZHANG Tian-Bao,

Institute of High Energy Physics,Academia,Beijing 100080

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1992-07-05

Abstract: A method for the measurement of the vacuum decay rate λ₀ of orthopositronium is suggested and the preliminary result is obtained λ₀=7.034±0.013μs^－1.The possibility for the improvement of the experiment has been discussed.