del
|
|
Vlad
|
Mon Feb 04 2013, 05:33PM
|
|
|
Registered Member #9711
Joined: Sat Jan 19 2013, 03:27PM
Location:
Posts: 65
|
del
|
Back to top
|
|
Proud Mary
|
|
Registered Member #543
Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
|
Hi Vlad, small biological specimens often require low energy x-rays to obtain a satisfactory image with good contrast. This could be problematic if diagnostic x-ray tubes - dental tubes for example - are used, since these emit very little radiation below about 20 keV.
I would suggest your friend tried an 'analytic' X-ray tube with a beryllium window, which would allow beam energies down to about 3 keV. Try with 10 kV on the tube anode to start with, and increase or decrease the voltage and current until you get an image with good contrast. Aluminium foil filters can also help to improve contrast in some cases by attenuating the longer wavelength rays.
Stella
|
Back to top
|
|
Moderator(s): Chris Russell, Noelle, Alex, Tesladownunder, Dave Marshall, Dave Billington, Bjørn, Steve Conner, Wolfram, Kizmo, Mads Barnkob
|
|
Powered by e107 Forum System
|