RE: Parafocussing definition?

2016-05-03 Thread Cline, James Dr. (Fed)
Reinhard, Lost me on this: A simple drawing of the… Do you have one online somewhere? I’m not following your description. We have a machine with an IBM and PSD that displayed a considerable increase in background at low angle. We built an automated anti-scatter knife-edge that works quite

Re: Parafocussing definition?

2016-05-03 Thread Reinhard Kleeberg
Dear Tony, Am 03/05/2016 um 12:58 schrieb Tony Raftery: What the world needs is better control of antiscatter. Mis-set anti-scatter or absent anti-scatter slits make life a misery if one has any intention of modelling a diffraction pattern. exactly. This holds not only for mysterious

RE: Parafocussing definition?

2016-05-03 Thread Tony Raftery
Reinhard, Thank you for your contribution and that of others. We all need to be reminded of what we are doing and why we are doing it (and the compromises along the way). What we measure is a mere reflection of the sample; use a different machine or different settings and you will get a

Re: Parafocussing definition?

2016-05-03 Thread Reinhard Kleeberg
Am 03/05/2016 um 03:00 schrieb Matthew Rowles: K (and also Brentano, upon rereading) say that in order to be focussing, the sample also needs to be toroidally curved; curved along ACB as well as be rotated about the axis AB; so it is a little more than the traditional flat-sample effect Yes.