VERA: A new AMS facility in Vienna

Kutschera, W.; Collon, P.; Friedmann, H.; Golser, Robin; Hille, P.; Priller, Alfred; Rom, Werner; Steier, Peter; Tagesen, S.; Wallner, A.; Wild, Eva Maria; Winkler, Gunter

doi:10.1016/s0168-583x(96)00782-3

Cited by 46 publications

(21 citation statements)

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“…Aluminum foils (0.542±0.006 mg/cm 2 ) were irradiated by 9 Be ions with energies between 5 and 14 MeV [1] at the VERA tandem accelerator AMS (accelerator mass spectrometry) facility [2].…”

Section: Methodsmentioning

confidence: 99%

Light ion induced nuclear reactions close to the Coulomb barrier

Forstner

Törnström

Friedmann

et al. 2011

J. Phys.: Conf. Ser.

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Abstract. The aim of our study is to determine excitation functions for the formation of different reaction products with light ions near the Coulomb barrier and to compare the results with computations according to different reaction mechanisms (compound reactions, direct reactions). In the present study results from experiments with a beam of 9 Be on a thin Aluminum target below and around the Coulomb barrier are presented. The formation of several reaction products was determined by the characteristic gamma emissions from these nuclei. Excitation functions of the reactions

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“…Aluminum foils (0.542±0.006 mg/cm 2 ) were irradiated by 9 Be ions with energies between 5 and 14 MeV [1] at the VERA tandem accelerator AMS (accelerator mass spectrometry) facility [2].…”

Section: Methodsmentioning

confidence: 99%

Light ion induced nuclear reactions close to the Coulomb barrier

Forstner

Törnström

Friedmann

et al. 2011

J. Phys.: Conf. Ser.

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“…Although AMS measurements were performed at 3 different AMS laboratories, only the data evaluation at VERA shall be discussed in detail (see also Kutschera et al (1997); Priller et al (1997); Rom et al (1998)). …”

Section: Data Evaluation and Calibrationmentioning

confidence: 99%

AMS ¹⁴C Dating of Equipment from the Iceman and of Spruce Logs from the Prehistoric Salt Mines of Hallstatt

et al. 1999

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ABSTRACT. This paper summarizes radiocarbon measurements of mainly botanical samples from the Iceman ("Otzi") and from his discovery site, an Alpine glacier at the Austrian-Italian border. The results were obtained by accelerator mass spectrometry (AMS) at 3 different laboratories (Vienna, Austria; Uppsala, Sweden; Gif sur-Yvette, France) between 1992 and 1997. All the dates, except 2, are consistent with the time period 3360-3100 BC, as previously determined from bone and tissue samples from the Iceman himself. The 2 exceptional dates from wooden artifacts suggest that the site of the Iceman was used as a mountain pass for millennia prior to and after the lifetime of "Otzi".For a 2nd sample complex, we studied logs from the beginning of salt mining in the world's oldest salt mines at Hallstatt in Upper Austria. '4C AMS measurements were performed in Vienna on spruce samples found in the prehistoric mines and from a log-house on the surface. Data evaluation included "wiggle matching" of different sets of tree rings. The results suggest that salt mining in the Hallstatt region took place in the l4th-l3th century BC, well before the so-called Hallstatt period.We discuss in some detail the chemical pretreatment of the samples and the data evaluation. We also present a comprehensive survey of 14C dates available in the literature concerning both botanical remains from the vicinity of the Iceman and from the earliest salt mining in Hallstatt.

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“…The AMS facility at the University of Vienna, the Vienna environmental research accelerator (VERA), is designed to measure many long-lived radionuclides across the whole nuclear chart [2]. The lighter radionuclides of interest, such as 10 Be (t 1 2 1 5 ¢10 6 a) [3], 14 C (5 73 ¢10 3 a) [4] and 26 Al (7 2 ¢ 10 5 a) [5], have been routinely measured for several years with a large number of samples.…”

Section: Introductionmentioning

confidence: 99%

Accelerator mass spectrometry of the heaviest long-lived radionuclides with a 3-MV tandem accelerator

et al. 2002

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A 3-MV pelletron tandem accelerator is the heart of the Vienna environmental research accelerator (VERA). The original design of the beam transport components allows the transport of ions of all elements, from the lightest to the heaviest. For light ions the suppression of neighboring masses was sufficient to measure isotopic ratios of 14 C/ 12 C and 26 Al/ 27 Al as low as 10 15 and 10 Be/ 9 Be down to 10 13 . To suppress neighboring masses for the heaviest radionuclides in the energy range of 10-20 MeV, the resolution of VERA was increased both by improving the ion optics of existing elements at the injection side and by installing a new high-resolution electrostatic separator at the high-energy side. Interfering ions which pass all beam filters are identified with a Bragg-type ionization detector and a high-resolution time-of-flight system. Two ultra-thin diamond-like carbon (DLC) foils are used in the start and stop detector, which substantially reduces losses due to beam straggling. This improved set up enables us to measure even the heaviest long-lived radionuclides, where stable isobaric interferences are absent (e.g. 236 U and 244 Pu), down to environmental levels. Moreover, the advantage of a 'small' and well manageable machine like VERA lies in its higher stability and reliability which allows to measure these heavy radionuclides more accurately, and also a large number of samples.

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VERA: A new AMS facility in Vienna

Cited by 46 publications

References 1 publication

Light ion induced nuclear reactions close to the Coulomb barrier

Light ion induced nuclear reactions close to the Coulomb barrier

AMS ¹⁴C Dating of Equipment from the Iceman and of Spruce Logs from the Prehistoric Salt Mines of Hallstatt

Accelerator mass spectrometry of the heaviest long-lived radionuclides with a 3-MV tandem accelerator

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VERA: A new AMS facility in Vienna

Cited by 46 publications

References 1 publication

Light ion induced nuclear reactions close to the Coulomb barrier

Light ion induced nuclear reactions close to the Coulomb barrier

AMS 14C Dating of Equipment from the Iceman and of Spruce Logs from the Prehistoric Salt Mines of Hallstatt

Accelerator mass spectrometry of the heaviest long-lived radionuclides with a 3-MV tandem accelerator

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AMS ¹⁴C Dating of Equipment from the Iceman and of Spruce Logs from the Prehistoric Salt Mines of Hallstatt