1920. No. 2. 



ON THE X-RAY SPECTRA. 



Ï3 



Table III. 



For small atomic numbers we can put f = o and 



V 



R 



3/4 X-^ - BK + C. 



Calculating-^, for various values of (/., we should find that q^ = g gives 

 A 



the best agreement with observations for small atomic numbers. But 

 also the other values of (j.> give a fairly good agreement, and as already 

 mentioned in the general discussion of the problem (j.y must be deter- 

 mined from the L-radiation. 



In paper I we found that (j.^ = 7 and 73 = i would give a good 

 agreement in the case of L^. As we shall see later on the explanation 

 of Z,,^ on the assumption of recombination between primaries and con- 

 servation of momentum gives ijo = 7. 



Thus we put: 



^/1 -^ 3. % = 7- 



In a cordance with Debye we introduce for the sake of convenience 

 the quantity J given by tiie expression : 



J^i-y.N^ 



nx-^c^e. 



In the present case we have : 



= 1.325 lO-'- (3 (^^^—0.577»'— 2(iV — 0,25)^- ^''^(^'-4.305^ + 



In Table IV. are given values of J corresponding to various values 



of X. 



