464 



VIRTUA1_ eiURFA.CE: 



f^REE. suRr^>ce. 



TAROE^T 

 PLATE. 



e- 



Nk 



SET UP OF BOX MODEL FOR RRL SHOTS 



ai, •- 



-_ SOURCE. OF 



STREMGTM n ^' 



BUBB LE 



EXPERIMEMTAL SELT UP AS- MODIFIED FOR 



CAvLCULATIOrsS I — — 



FIG -I- 



