Notes
Slide Show
Outline
1
 
2
 
3
The Corona point housing
4
The Scenario....
  • The 2l2l’2l’’ triply excited states of F9+ had recently been observed in fast energy collisions using the method of triple ion capture to a bare ion using the paracentric HDA [Zamkov. et all, Phys. Rev. A, 67, (050703), 2003]
  • Since these states are not completely described within the IPM, C.D. Lin et all were working on new ways to describe these states from the correlated  motion of the electrons within the state. [Phys.Rev. A, 67, 022511]
5
The plan.......
6
The tools....
7
The spectrometer, gas cell and channeltron
8
Spectrometer resolution found using an electron gun [H. Aliabadi, doctoral thesis, (2004)]
9
And.....results.........(reality kicks in!)
10
What the previous graph means.....
11
Yes, but what’s it all about ?
12
On to cross section calculation....
13
What was discovered...
14
and...the triply excited states!
15
 
16
Ratio of double to triple capture...
17
and ...
18
 The only energy dependence of cross sections calculation so far......
19
and more ...
20
and more ratios .....
21
and more ratios .....
  • F9+ Double capture to F8+ excitation + capture = 5.99




  •         Results of individual lines not plotted yet


22
So for the future....
  • During last summer and this semester the paracentric spectrometer has been improved
  • It is hoped that the improvements will allow us to operate with higher decel factors and thus obtain higher energy resolustion.
  • Its therefore to repeat all  of this on the paracentric HDA!
  •                                             so that
  •  we can further investigate the beam energy dependence of                     triple to double capture.


  •                   Thanks for listening !
23
Just in case someone asks....