|
Ion traps and guides Laboratory astrochemistry |
Prof. Dieter
Gerlich |
|
|
|
|
Elementary gas phase processes in cold ion traps
In summer 2009, the CEB-22PT apparatus has been
moved from Chemnitz to Prague. Present activities concentrate on pure
hydrogen ion chemistry including H or D atoms. Results for H‑
+ H → H2
+ e‑ have been submitted to Ap. J.
in Dec. An important next step is the asymmetric case H‑ +
D. In collaboration with Köln (S. Schlemmer,
detailed laboratory work studying the influence of traces of H2(j=1)
on interstellar chemistry has been started. The special guided and trapped
ion beam instrument (ES-MPT)
is operational; however, it is a challenge to combine rf and magnetic fields
for guiding electrons out of the trap. |
|
|
|
Department of |
|
|
|
|
Ion spectroscopy of reaction intermediates
Since
2011, I am engaged as adviser in the group of Jana Roithová. The aim is to study cold ions
with infrared multiphoton processes. A new trap is
under development which, in addition to mass spectrometic
detection of fragments, will also us to detect the radiation from
non-dissociating high temperature intermediates. |
|
|
|
||
|
|
The UoA trapping instrument for
astrochemistry
Starting in 2004, Mark A Smith and I
have developed an ion trapping instrument in his laboratory
for studying reactions between trapped ions and beams of atoms, molecules or
radicals. Between 2004 and 2009, I spent more than 15 months in Tucson for
contributing to these activities. Unfortunately, Mark has accepted a new challenge beginning on Jan. 1, 2011. |
For details see Recent publication: The publication [ger11] |
|
|
|
||
|
|
Nanoparticles in traps
On 30.09.2009, I retired from the TU Chemnitz (mandatory retirement). In order to clear out
the laboratory for my successor (Prof. R. Bratschitsch)
the last instruments (trapping nanoparticles,
optical detection with single photon sensitivity, NPMS:
nano-particle mass spectrometry with high
resolution, ideal electrode arrangements, trapping particles at high
temperatures: HT SRET) have been moved from Chemnitz to the laboratory of
Prof. S. Schlemmer in Köln in Sept. 2010. It is
planned to use the instrument in a project supported by the DFG Priority
Program 1573. Physics of the Interstellar Medium. |
|
|
For additional information see http://www.tu-chemnitz.de/physik/ION/
|
D. Gerlich 18.01.2012 |