Reference_Lines@2.4GeV

 

Photoemission at 2.4 GeV, 150 mA in ring.


Guideline values for typical organic samples. Optimise the gap about once a week.
  Grating Slits
(micron)
Gap Photon energy (eV) Kinetic energy (eV) Step (eV) Pass Energy Typical photodiode current, microamp Calibration (eV)
VB G3 50/200 65.7 100 60-97,
80-98
0.1 or 
0.05
5 120  see Reference_line@2 GeV
C 1s G4 30/50 71.45 382 86-97 0.05 10   "
N 1s G5 30/50 78.9 495 88-95 0.05 10    "
O 1s G5 30/50 86.8 628 90-96 0.1 10    "


NEXAFS at 2.4 GeV, 310 mA in ring

  Grating Slits (micron) Gap (mm) Photon energy (eV) Step (eV) Comment Typical lifetime widths of core holes. Calibration (eV)
C 1s G4 20/20
20/30
64.4
65.0
65.4
282-295 ( Hm@287)
292-300 (Hm@297)
295-315 
0.025
0.050
0.1
Slit size depends on signal level.
If vibrational structure is expected, 10/10 may also be used.
80 meV see Reference_line@2 GeV
N 1s G5 20/20 73.2 396-410 0.05   120 meV "
O 1s G5 20/20
30/50
81.5
81.8
525-542
534-547
0.05
0.10
  150 meV "
 
Last Updated on Thursday, 06 December 2018 11:55