CHINESE JOURNAL OF PHYSICS VOL. 40, NO. 1 FEBRUARY 2002

The Emission of Relativistic Singly Charged Fragments and
the Final-State Energy Spectrum in Electromagnetic Dissociation of
_ZX into H and _Z-1Y

Fu-Hu Liu

Institute of Modern Physics and Department of Physics, Shanxi Teachers University,

Linfen, Shanxi 041004, China
(Received October 2, 2001)

We have introduced a two-source emission picture to describe the transverse momentum (P_T) distribution of relativistic singly charged fragments (H fragments) in the decay mode _ZX($\gamma$,H)_Z-1Y. The calculated results are compared and shown to be in agreement with the experimental H fragment P_T distributions in the decay mode ³²S($\gamma$,H)P and ¹⁶O($\gamma$,H)N at 200A GeV. The final-state energy spectrum in the electromagnetic dissociation is calculated by a simple method. The final-state energy curves obtained from the calculation are in agreement with the experimental data of ²⁸Si into p + ²⁷Al at an energy of 14.6A GeV.

PACS. 25.75.-q - Relativistic heavy-ion collisions.
PACS. 25.70.Mn - Projectile and target fragmentation.

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