Conveners
New and Advanced AMS Techniques
- Hans-Arno Synal (Ionpuls AG)
New and Advanced AMS Techniques
- Ming He (中国原子能科学研究院)
Description
New techniques or innovations in AMS measurement and instrumentation.
Shan Jiang1,2, Hongtao Shen3
1, China Institute of Atomic Energy
2，Qixian Nuclear Science and Technology Limi.Comp.
3，Guangxi Normal University
Since the invention of AMS, many scientific and technological problems in the natural sciences have been solved. However, there are still many problems that cannot be solved so far, such as (1) the measurement of inert gases; (2) higher or lower...
The integration of a unique low-energy isobar suppression unit, the Anion Laser Isobar Separator (ALIS), marks a significant extension to the CologneAMS infrastructure. After the successful test of the advanced gas-filled radio frequency quadrupole (RFQ) ion cooler at the Vienna test bench, we present insights from first benchmark tests conducted at ALIS.
ALIS consists of three major...
Classical AMS measurements of $^{36}$Cl require high ion energies to enable isobar separation of $^{36}$S by nuclear separation techniques exploiting the different stopping power of S vs. Cl. The 6 MV Tandem accelerator at ETH Zurich was one of the first AMS systems being able to measure $^{36}$Cl already several decades ago [Synal et al. NIM B 29 (1987) 146] and has been heavily used for...
Radiocarbon has presented its importance in versatile applications, ranging from dating ancient (in e.g. Quaternary study and archaeology) or modern (in e.g. forensic science) samples, tracing metabolic pathways in human bodies, to determination of bio-/fossil- components (in fuel, fabric, or even emissions of green-house gases and particulate pollution) for environmental considerations. The...
The compact 0.3MV MILEA AMS facility was developed at ETH Zurich in collaboration with Ionplus AG, Switzerland, as an optimized low energy AMS system for the analysis of a series of long-lived radioisotopes such as $^{10}$Be, $^{14}$C, $^{26}$Al, $^{41}$Ca, $^{129}$I and actinides. The MILEA facility is equipped with a vacuum insulated accelerator that is powered by a commercial solid state...
Radiocarbon measurement technology has significant applications in archaeology, earth science, environmental science, biomedicine and so on, especially in radioactive dating, climate change, nuclear analysis, pharmacokinetics. The traditional 14C accelerator mass spectrometer (14C-AMS) based on tandem is much expensive and complex to maintain and operation. It is urgent to develop a new type...
$^{53}$Mn is a rare, radioactive isotope with a half-life of 3.74 million years which has astrophysical applications as an early solar system chronometer and as a test of nucleosynthesis models of supernovae and asymptotic giant branch (AGB) stars. In addition, $^{53}$Mn has geological applications in determining the exposure and burial age of ferromanganese minerals. To fully exploit the...
The negative ion source most commonly used in AMS systems is the cesium sputter type. Cesium is hazardous, making its handling not easy. Recently, the spread of compact AMS systems with acceleration voltages of 500 kV or less has been progressing. For the widespread adoption of AMS systems, it is desirable for the ion source to not only be highly efficient but also cesium-free from the...
