Measurements of the quadrupolar part of the nuclear spin relaxation rate, R , are reported for the liquid metallic alloys In-Sn and Sn-Sb. The relaxation rate has been obserged as a function of concentration and temperature. We used the 340 ys isomeric state 1 1 7 m~b in a TDPAD experiment. Inspection of the systematical trends in the data for R in In-X alloys suggests a correlation between R and the concentration fluctuations. The eaplanatio8 for the sensitivity of Rg is sought by discus%ng

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... rt range order in liquid alloys. Experiment and R e s u l t s We h a v e measured R f o r a n u c l e a r i s o m e r i c 3 s t a t e which i s produced and a l i g n e d by a n u c l e a r r e a c t i o n . The i s o m e r i c s t a t e dec a y s by y-emission, t h e a n g u l a r d i s t r i b ut i o n o f t h e Y-rays b e i n g d i r e c t l y c o n n e c t e d t o t h e d e g r e e o f a l i g n m e n t of t h e s p i n s o f t h e i s o m e r i c s t a t e . The 340 ps i s o m e r -W. Schirmacher : Ber . Bunsen Ges. 80 (1976) 736 J . Bosse e t a l . : C o n t r i b u t i o n t o t h i s c o n f e r e n c e A.B. B h a t i a e t d l . : Phys. Rev. B;? (1970) 3004 P. Raghavan e t d l . : Phys. Rev. 313 (197.6) 2834 -J . Rossbach e t a l . : J . Phys. FIO (19801729 -E . Weihreter: T h e s i s , F r e i e U n i v e r s i t a t B e r l i n , 1978; Phys. L e t t , a (1978) 394 M. S o l t w i s c h e t a l . : Contribut i o n t o t h i s c o n f e r e n c e .