THE USE OF ACCELERATORS OF CHARGED PARTICLES 



417 



Table 5. Nuclear reactions, used in obtaining gamma quanta* 



* Composed from the data in t^^, ^3, 20, 2)_ 



t Number of gamma quanta equals the strength in Curies multiplied by S.7 X IQi". 



BASIC PROBLEMS IN CONSTRUCTION OF A BORE-HOLE GAMMA QUANTA 



GENERATOR 



A normal acceleration tube or a betatron is used as a gamma quanta 

 generator. 



The construction of a gamma quanta generator using a normal acceleration 

 tube in principle does not in any way differ from the construction of a neutron 

 generator which is shown diagrammatically on Fig. 3. However, in order 

 to obtain gamma quanta unstead of neutrons it will be necessary to use 

 other targets and ionized gas. 



Nuclear reactions which can be used to obtain gamma quanta are given 

 in Table 5. 



The data on the possible power of a gamma quanta source, which are 

 given in Table 5 are based on the following deductions. From the data on 



Applied geophysics 27 



