evin Jude
Sent: Monday, July 21, 2008 2:20 PM
To: CCP4BB@JISCMAIL.AC.UK
Subject: Re: [ccp4bb] Spooky, moving crystals
I've seen haunted crystals before - the culprit was indeed with the
mounting of the pins in their bases (I was re-using some pins and
apparently the adhesive had cracked
1925 603808 Fax: (+)44 1925 603124
e-mail: [EMAIL PROTECTED] html: http://www.srs.ac.uk/px/pjr/
-Original Message-
From: CCP4 bulletin board [mailto:[EMAIL PROTECTED] On Behalf
Of Mark J. van Raaij
Sent: 21 July 2008 18:47
To: CCP4BB@JISCMAIL.AC.UK
Subject: [ccp4bb] Spooky, movin
Behalf Of Mark J. van
Raaij
Sent: 21 July 2008 18:47
To: CCP4BB@JISCMAIL.AC.UK
Subject: [ccp4bb] Spooky, moving crystals
Dear all,
in a recent synchrotron trip we had a problem with our crystals moving
after mounting them onto the goniometer, in some cases they moved out
of the beam and even
We had exactly the same - and there were two culprits:
1. frozen gas trapped between the jacket of the pre-mounted Hampton loop
and the loop itself
2. ice on the base of the pin. When the ice slowly melted (on contact with
the goniometer head at room temp.) the base shifted by infinitesmally
small
EMAIL PROTECTED] Telepathy: 42.2 GHz
Heisenberg was probably here!
-Original Message-
From: CCP4 bulletin board [mailto:[EMAIL PROTECTED] On Behalf Of Kevin Jude
Sent: Monday, July 21, 2008 2:20 PM
To: CCP4BB@JISCMAIL.AC.UK
Subject: Re: [ccp4bb] Spooky, moving crystals
I've seen hau
I've seen haunted crystals before - the culprit was indeed with the
mounting of the pins in their bases (I was re-using some pins and
apparently the adhesive had cracked or otherwise failed). Fortunately I
never leave home without a tube of Duco cement and was able to correct
the problem in si
Dear all,
in a recent synchrotron trip we had a problem with our crystals moving
after mounting them onto the goniometer, in some cases they moved out
of the beam and even out of the zoomed camera picture - it seemed the
pins, upon equilibrating to room temperature, extended. It happened
