Field effects on the recombination of atomic ions studied at a storage ring electron cooler

2000 ◽  
Author(s):  
S. Schippers
Keyword(s):  
Storage Ring ◽  
Electron Cooler ◽  
Atomic Ions ◽  
Field Effects

Astrochemical studies at the Cryogenic Storage Ring

2019 ◽  
Vol 377 (2154) ◽  
pp. 20180412 ◽  
Author(s):  
H. Kreckel ◽  
O. Novotný ◽  
A. Wolf
Keyword(s):  
Storage Ring ◽  
Nuclear Physics ◽  
Molecular Ions ◽  
Rate Coefficients ◽  
Max Planck ◽  
Electron Recombination ◽  
Interstellar Molecule ◽  
Electron Cooler ◽  
Cryogenic Storage ◽  
Main Research

The new Cryogenic Storage Ring at the Max Planck Institute for Nuclear Physics (Heidelberg, Germany) has recently become operational. One of the main research areas foreseen for this unique facility is astrochemical studies with cold molecular ions. The spontaneous radiative cooling of the prototype interstellar molecule CH + to its lowest rotational states has been demonstrated by photodissociation spectroscopy, paving the way for experiments under true interstellar conditions. To this end, a low-energy electron cooler and a neutral atom beam set-up for merged beams studies have been constructed. These experiments have the potential to provide energy-resolved rate coefficients for fundamental astrochemical processes involving state-selected molecular ions. The main target reactions include some of the key processes of interstellar chemistry, such as the electron recombination of H 3 + , charge exchange between H 2 + and H, or the formation of CH + in collisions of triatomic hydrogen ions and C atoms. This article is part of a discussion meeting issue ‘Advances in hydrogen molecular ions: H 3 + , H 5 + and beyond’.

PRESENT STATUS OF HIRFL IN LANZHOU

2006 ◽  
Vol 15 (08) ◽  
pp. 1941-1956 ◽  
Author(s):  
WENLONG ZHAN ◽  
HUSHAN XU ◽  
ZHIYU SUN ◽  
GUOQING XIAO ◽  
JIAWEN XIA ◽  
...  
Keyword(s):  
Storage Ring ◽  
Atomic Physics ◽  
Present Status ◽  
Nuclear Physics ◽  
Basic Research ◽  
Future Experiment ◽  
Electron Cooler ◽  
Carbon Beam

HIRFL has been upgraded for basic research on nuclear physics, atomic physics, irradiative material and biology from beginning of this decade. So far, the main performances of HIRFL have improved in the beam species from light ion to uranium and the maximum beam intensities reaching ~10μA from SFC, 1.5 μA from SSC. Therefore, some experiments have been performed during this period, especially, on new isotope synthesis and unstable nuclear physics. The new upgrading project Cooling Storage Ring (CSR) is under commissioning by ~2p μA carbon beam stripping injection. About 109 C ion have stored inside CSRm, and part of them have been cooling down by the electron cooler. The acceleration of CSRm also has been test successful. Some future experiment are under development.

DC Septum Magnets and Their Leakage Field Effects on an Electron Beam in the SPring-8 Storage Ring

2004 ◽  
Vol 14 (2) ◽  
pp. 433-436 ◽  
Author(s):  
K. Tsumaki ◽  
T. Shimada ◽  
K. Kajimoto ◽  
H. Yonehara ◽  
N. Kumagai
Keyword(s):  
Electron Beam ◽  
Storage Ring ◽  
Field Effects ◽  
Leakage Field
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