[RASMB] XLI absorbance problem

Laue, Thomas Tom.Laue at unh.edu
Tue Feb 24 05:46:48 PST 2015


Hi-
I suggest you take a wavelength scan on an empty hole and send along those results. The original intensity scans showed there was no (or very little) difference in intensity between the sample and reference sectors. This would be true if the wavelength were being reported incorrectly. The counterweight scan looks fine (though I agree that the intensity seems low), you can see the slight difference in the size of the holes. This would indicate that the timing and radial position calibration are OK. 
Best wishes,
Tom
________________________________________
From: RASMB [rasmb-bounces at list.rasmb.org] on behalf of Curth [curth.ute at mh-hannover.de]
Sent: Tuesday, February 24, 2015 6:11 AM
To: Andrew Leech
Cc: rasmb at list.rasmb.org
Subject: Re: [RASMB] XLI absorbance problem

Hi Andrew,

if I do an intensity scan of the counterbalance with our XL-I in
continuous mode, I get similar intensities. In step mode, however, the
intensities are much higher. So, if it was performed in continuous mode,
the scan of the counterbalance looks fine to me.

Best wishes,

Ute

--
>Prof. Dr. Ute Curth
>Hannover Medical School
>Research Core Unit for Structural Analysis, OE 8830
>Carl-Neuberg-Str. 1
>30625 Hannover
>Germany

>Tel.:+49-511-5329372
>Fax :+49-511-5325966

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