“…The passive absorber technique was originally applied for 10 Be measurements at AMS systems operating at 6 MV [8] and is an affirmed and efficient method to measure 10 Be at facilities operating at terminal voltages of 3 MV and above [9][10][11][12][13]. In these cases, beam losses in the absorber are considerably lower than the ones caused by a degrader (e.g.…”
“…The passive absorber technique was originally applied for 10 Be measurements at AMS systems operating at 6 MV [8] and is an affirmed and efficient method to measure 10 Be at facilities operating at terminal voltages of 3 MV and above [9][10][11][12][13]. In these cases, beam losses in the absorber are considerably lower than the ones caused by a degrader (e.g.…”
“…Transmission efficiencies of 9 Be 2+ and 9 Be 3+ were determined for AMS measurements of 10 Be. In the first case the transmission efficiency was by more than a factor of 10 greater, therefore the 9 Be 2+ beam was used for 10 Be measurements [ 181 ].…”
Section: Centre For Nuclear and Accelerator Technologies (Centa)mentioning
confidence: 99%
“…The standard 10 Be source (S555 developed at ETH Zürich) with the 10 Be/ 9 Be mass ratio of (8.71 ± 0.24) × 10 −11 was used in these measurements. Using this setup, a detection limit for 10 Be/ 9 Be of 10 −12 was achieved, which was mainly determined by scattering of 9 Be +2 ions on residual gas inside the switching magnet [ 181 ]. Fig.…”
Section: Centre For Nuclear and Accelerator Technologies (Centa)mentioning
confidence: 99%
“…20 End of the line detectors for 10 Be analysis Fig. 21 Multidimensional mass spectra of 10 Be ions (top) and background (bottom) measured in the ionization chamber with silicon nitride stack absorber [ 181 ] …”
Section: Centre For Nuclear and Accelerator Technologies (Centa)mentioning
Recent developments in radiometric and mass spectrometry technologies have been associated in the radiometric sector mainly with underground operations of large volume Ge detectors, while the mass-spectrometry sector, represented mainly by accelerator mass spectrometry and inductively coupled plasma mass spectrometry has become the most sensitive technique for ultra-low-level analyses of long-lived radionuclides. These new developments have had great impact on investigations of rare nuclear processes and applications of radionuclides in environmental, life and space sciences. New scientific investigations have been carried out therefore which have not been possible before either because of lack of sensitivity or required large sample size.
“…As an example of the first AMS measurements carried out at the CENTA facility we present an analysis of 10 Be [48]. AMS analysis of 10 Be using only a small switching magnet as the ion analyzer ( Fig.…”
Section: Transport Of Ions Through the Accelerator Systemmentioning
Developments of solid targets and optimizations of ion sources were carried out with the aim to produce high ion yields for applications of tandem accelerators as mass spectrometers. A comparison of Al -yields from different aluminum targets showed that the best results were obtained with AlN targets. Transmission studies of 9 Be and 12 C ions through the Pelletron accelerator showed highest efficiencies for 9 Be 2? and 12 C 2? . First results obtained with a simplified version of the AMS line are presented as well.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
