Click here to make tpub.com your Home Page

Page Title: Implications of Power and X-Ray Production cont'd
Back | Up | Next

Click here for thousands of PDF manuals

Google


Web
www.tpub.com

Home

   
Information Categories
.... Administration
Advancement
Aerographer
Automotive
Aviation
Construction
Diving
Draftsman
Engineering
Electronics
Food and Cooking
Logistics
Math
Medical
Music
Nuclear Fundamentals
Photography
Religion
   
   

 



DOE-HDBK-1109-97
Radiological Safety Training for Radiation-Producing (X-Ray) Devices
Instructor's Guide
Lesson Plan
Instructor's Notes
Fraction of incident electron energy transformed
into X-ray energy equals:
(7 X 10 -4) x Z x E
Where Z is the atomic number of the element (74
for tungsten) and E is the maximum energy of the
incoming electrons in MeV.
In this case, the fraction would be:
(7 X 10 -4) x 74 x 0.150 = 0.008
In the above example P is 7500 W. So the electron
energy incident upon the anode is:
7500 W = 7500 J/s
Note: 1 W = 1 J/s
Then the energy transformed into X-rays would be
0.008 [7500] = 60 J/s.
1 J = 107 ergs, and 100 ergs/g = 1 rad.
So this X-ray energy represents:
6.0 x 108 ergs/sec.
If all this X-ray energy were deposited in 1 g of
tissue, the dose would be:
6.0 x 108 ergs/sec [1 rad/100ergs/g] =
6.0 x 106 rad/sec.
However, in practical applications X-ray beams are
filtered to remove softer X-rays not useful in
radiology, the X-ray pulse is much less than 1
25


Privacy Statement - Press Release - Copyright Information. - Contact Us

Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business