Re: Aking for Advice - reduce the current to X-ray tube to avoid director saturation at low angels

2016-03-06 Thread Fabrizio Guzzetta
Thanks for the interesting subject. It is really informing and very helpful to improve instrumental resolution. P.S. Julian, ever tried additional SAXS experiments changing several parameters to optimize your setup? Did you get same data on Synchrotron or taking neutron diffraction patterns with th

Re: RE: Aking for Advice - reduce the current to X-ray tube to avoid director saturation at low angels

2016-03-06 Thread iangie
Echo reducing tube power just reducing intensity which reduces your peak height together with the background level. It won't help on the peak to background ratio. What you need to improve is the beam path. WhenI was checking the low angle beam path, I measured the stage/goniometer dimensio

RE: Aking for Advice - reduce the current to X-ray tube to avoid director saturation at low angels

2016-03-06 Thread Julian Richard Tolchard
Shay, Can we assume you are working with a reflection mode instrument? You have two primary sources of background - the primary beam hitting the detector directly, and x-rays scattering from the air rather than the sample. The first of these you control with the divergence slits, but really sho

Aking for Advice - reduce the current to X-ray tube to avoid director saturation at low angels

2016-03-06 Thread Shay Tirosh
Dear Rietvelders I would like to avoid director saturation (we have a *LYNXEYE* detector) when I work at low angles (lower then 10deg). I thought it would be good to lower the current tube to reduce the current. say to 35mA instead of 40mA. Can you please comment on problems it should encounter? C