Universität zu Köln

Schiffer, M., Spanier, R., Mueller-Gatermann, C., Herb, S., Feuerstein, C., Hackenberg, G., Marock, M., Heinze, S., Stolz, A., Dewald, A. and Binnie, S. (2018). The first (Mn-53/Mn-55) isotopic ratio measurements at the Cologne FN-Tandem Accelerator. Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms, 437. S. 87 - 93. AMSTERDAM: ELSEVIER SCIENCE BV. ISSN 1872-9584

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Abstract

A new accelerator mass spectrometer was successfully designed for the Cologne FN accelerator to enlarge the measurement capability of CologneAMS to medium mass radionuclides. With this AMS-system (Mn-53/Mn-55) isotopic ratios are measurable at a 10 MV tandem accelerator in the range of 10(-9) to 10(-10) for the first time, with a detection limit of C-L = 5.0 x 10(-12). A high Cr-53 suppression in the (Mn-53/Mn-55) isotopic ratio measurement was achieved by using the optimal silicon nitride degrader foil thickness in combination with an electrostatic analyzer (ESA). The new system opens the field of research for CologneAMS users to the medium mass region of cosmogenic nuclides, like Mn-53 for geological applications of long term erosion, exposure and burial dating and Fe-60 for nuclear astrophysical models. The presented definition of an error normalized sensitivity S-x allows an inter laboratory comparison of isotopic ratio measurements.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Schiffer, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Spanier, R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Mueller-Gatermann, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Herb, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Feuerstein, C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hackenberg, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Marock, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Heinze, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Stolz, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Dewald, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Binnie, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-161982
DOI:	10.1016/j.nimb.2018.09.029
Journal or Publication Title:	Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms
Volume:	437
Page Range:	S. 87 - 93
Date:	2018
Publisher:	ELSEVIER SCIENCE BV
Place of Publication:	AMSTERDAM
ISSN:	1872-9584
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language DEDICATED AMS SETUP; HEAVY; IDENTIFICATION; FORMULAS; SYSTEM; MN-53; IONS Multiple languages Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/16198