Caption: Book - Century of Physics (1973)
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^0 " O r t ft( I.OS Al ,mo 8 In L943 bul
A1,nv ol in
t h e work at
^'•"' Karat requieitioned and diverted M, e commercial 25 MV betatrons, to e
B e t a t r o n s were a l s o d i l t v e i '1
tirni x - r . n
p i c t u r e a of e x p l o s i o n s .
ick island Araenal Ln i l l . no is and
the Picatinny Arsenal in New Fereey,
t o m a n u f a c t u r e m a c h i n e s for u s e i n r a d i o g r a p h y and
deal of attention was given at Illinois in the late forties The work was led by Dr.
to the use of 25 MeV x-rays for medical purposes.
Henrv Quastler who did some careful experiments on the relative biological amma hen in use. Pioneering experiments were also done on the distribution of x-ray dosage In tissue-like material when irradiated by the very penetrating eV x-rays and electrons. Quastler also attracted young physicists working Several of them Gail Adams went to the
a the laboratory into research in medical radiology. later went into important positions at medical centers.
niversity of California in San Francisco and later to the University of Oklahoma. John Laughlin went first to the Illinois Medical Center in Chicago
and later became Chief, Division of Physics and Biophysics, Sloan-Kettering Institute and Attending Physicist at Memorial Hospital, New York. Lester
aggs and Lawrence Lanzl headed up a research program at the University of Chicago and Jaques Ovadia did similar work at the Michael Reese Hospital Chicago. In the 1940's, 25 MeV was very high energy and the betatron was credited with a number of firsts. William Koch did the first photofission
experiments on the isotopes of uranium and plutonium, during the war and under highly secret onditions. Later on the betatron was used to break
open the extensive field photon-induced nuclear processes by Hanson. Kerst. Becker, . ffield and Almy. •Ucl
B 8cat lg (a(
The first experiments on high energx
,5 M c V ) were done by Hanson, Lyman and their students
an elec in 1
on beam which was Led out i , ,,,,, Axel made a m a , ,
Improvement in the method oi use
a a a photon-monchromator) With t h i s * '-' * • '••••» * atudant. ha. i-i < .. " « 1 u m q u e contribution, to nuclear . cure.