Dr Michaela Froehlich

Position	Senior Fellow
Department	Nuclear Physics & Accelerator Applications
Research group	Accelerator mass spectrometry group
Office phone	(02) 612 51612
Email
Office	Nuclear Physics 2 50

Publications

Journal article

Wallner A, Froehlich M, Hotchkis M, Kinoshita N, Paul M, Martschini M, Pavetich S, Tims S, Kivel N, Schumann D, Honda M, Matsuzaki H, Yamagata T
Fe-60 and Pu-244 deposited on Earth constrain the r-process yields of recent nearby supernovae
Science 372, 6543(2021) 742-745

Wallner A, Froehlich M, Hotschkis M, Kinoshita N, Paul M, Martschini M, Pavetich S, Tims S, Kivel N, Schumann D, Honda M, Matsuzaki H, Yamagata T
60Fe and 244Pu deposited on Earth constrain the r-process yields of recent nearby supernovae
Science 372, 6543(2021) 742-745

Wallner A, Feige J, Fifield K, Froehlich M, Golser R, Hotchkis M, Koll D, Leckenby G, Martschini M, Merchel S, Panjkov S, Pavetich S, Rugel G, Rugel G, Tims S, Tims S
60Fe deposition during the late Pleistocene and the Holocene echoes past supernova activity
PNAS - Proceedings of the National Academy of Sciences of the United States of America 117, 36(2020) 21873-21879

Froehlich M
²³³U/²³⁶U signature allows to distinguish environmental emissions of civil nuclear industry from weapons fallout
Nature Communications 11, 1(2020)

Leya I, David J, Faestermann T, Froehlich M, Kivel N, Koll D, Korschinek G, McIntyre S, Merchel S, Pavetich S, Rugel G, Schumann D, Smith T, Wallner A
53Mn and 60Fe in iron meteoritesNew data, model calculations
Meteoritics and Planetary Science (2020)

Bignell L, Barberio E, Froehlich M, Lane G, Lennon O, Mahmood I, Nuti F, Rahman M, Simenel C, Spinks N, Stuchbery A, Timmers H, Wallner A, Wang L, Wu J, Zhong Y
SABRE and the Stawell Underground Physics Laboratory Dark Matter Research at the Australian National University
EPJ Web of Conferences 232(2020)

Hain K, Steier P, Froehlich M, Golser R, Hou X, Lachner J, Nomura T, Qiao J, Quinto F, Sakaguchi A
233U/236U signature allows to distinguish environmental emissions of civil nuclear industry from weapons fallout
Nature Communications 11, 1(2020)

Dittmann B, Buompane R, Chamizo E, Christl M, Dewald A, Dunai T, Feuerstein C, Fifield K, Froehlich M, Heinze S, Marzaioli F, M�nker C, Tims S, Wallner A
ColPuS, a new multi-isotope plutonium standard for Accelerator Mass Spectrometry
Nuclear Instruments and Methods in Physics Research: Section B 438(2019) 189-192

Froehlich M, Akber A, McNeil S, Tims S, Fifield K, Wallner A
Anthropogenic 236U and Pu at remote sites of the South Pacific
Journal of Environmental Radioactivity 205-206(2019) 17-23

Hotchkis M, Child D, Froehlich M, Wallner A, Wilcken K, Williams M
Actinides AMS on the VEGA accelerator
Nuclear Instruments and Methods in Physics Research: Section B 438(2019) 70-76

Huang Y, Tims S, Froehlich M, Pan S, Fifield K, Pavetich S, Koll D
The 240Pu/239Pu atom ratio in Chinese soils
Science of the Total Environment 678(2019) 603-610

Martschini M, Fifield K, Froehlich M, Leckenby G, Pavetich S, Tims S, Tranter B, Wallner A
New and upgraded ionization chambers for AMS at the Australian National University
Nuclear Instruments and Methods in Physics Research: Section B 438(2019) 141-147

Medley P, Tims S, Froehlich M, Fifield K, Bollh�fer A, Wallner A, Pavetich S
Development of 231Pa AMS measurements to improve radiological dose assessment from uranium mining and milling
Nuclear Instruments and Methods in Physics Research: Section B 438(2019) 66-69

Pavetich S, Carey Hulyer A, Fifield K, Froehlich M, Halfon S, Kinast A, Martschini M, Nelson D, Paul M, Shor A, Sterba J, Tessler M, Tims S, Weissman L, Wallner A
93Zr developments at the Heavy Ion Accelerator Facility at ANU
Nuclear Instruments and Methods in Physics Research: Section B 438(2019) 77-83

Froehlich M, Tims S, Fallon S, Wallner A, Fifield K
Nuclear weapons produced 236U, 239Pu and 240Pu archived in a Porites Lutea coral from Enewetak Atoll
Journal of Environmental Radioactivity Article In Press(2017) 1-5

Pittauerova D, Tims S, Froehlich M, Fifield K, Wallner A, McNeil S, Fischer H
Continuous transport of Pacific-derived anthropogenic radionuclides towards the Indian Ocean
Scientific Reports 7(2017) 1-8

Tims S, Froehlich M, Fifield K, Wallner A, De Cesare M
U-236 and Pu-239,Pu-240 ratios from soils around an Australian nuclear weapons test site
Journal of Environmental Radioactivity 151, -(2016) 563-567

Froehlich M, Tims S, Fifield K, Dietze M
A comparison of fallout U-236 and Pu-239 uptake by Australian vegetation
Journal of Environmental Radioactivity 151(2016) 558-562

Froehlich M, Steier P, Wallner G, Fifield K
European roe deer antlers as an environmental archive for fallout U-236 and (PU)-P-239
Journal of Environmental Radioactivity 151(2016) 587-592

Froehlich M, Chan W, Tims S, Fallon S, Fifield K
Time-resolved record of U-236 and Pu-239,Pu-240 isotopes from a coral growing during the nuclear testing program at Enewetak Atoll (Marshall Islands)
Journal of Environmental Radioactivity 165(2016) 197-205

Murphy M, Froehlich M, Fifield K, Turner S, Schaefer B
In-situ production of natural U-236 in groundwaters and ores in high-grade uranium deposits
Chemical Geology 410(2015) 213-222

Buompane R, De Cesare M, De Cesare N, Di Leva A, D�Onofrio A, Fifield K, Froehlich M, Gialanella L, Marzaioli F, Sabbarese C, Terrasi F, Tims S, Wallner A
Background reduction in U-236/U-238 measurements
Nuclear Instruments and Methods in Physics Research: Section B 361(2015) 454-457

Mayer K, Wallenius M, Lutzenkirchen K, Horta J, Nicholl A, Rasmussen G, van Belle P, Varga Z, Buda R, Erdmann N, Kratz J, Trautmann N, Fifield K, Tims S, Froehlich M, Steier P
Uranium from German Nuclear Power Projects of the 1940s A Nuclear Forensic Investigation
Angewandte Chemie International Edition 54, 45(2015) 13452-13456

Dittmann B, Dunai T, Dewald A, Heinze S, Feuerstein C, Strub E, Fifield K, Froehlich M, Tims S, Wallner A, Christl M
Preparation of a multi-isotope plutonium AMS standard and preliminary results of a first inter-lab comparison
Nuclear Instruments and Methods in Physics Research: Section B 361, 2015(2015) 327-331

Froehlich M, Tims S, De Cesare M, Fifield K
First measurements of ²³⁶U concentrations and ²³⁶U/²³⁹Pu isotopic ratios in a Southern Hemisphere soil far from nuclear test or reactor sites
Journal of Environmental Radioactivity 132(2014) 108-114

Eigl R, Froehlich M, Steier P, Wallner G
²³⁶U/²³⁸U and ²⁴⁰Pu/²³⁹Pu isotopic ratios in small (2 L) sea and river water samples
Journal of Environmental Radioactivity 116(2013) 54-58

Froehlich M, Hrnecek E, Steier P, Wallner G
Determination of U, Pu and Am isotopes in Irish Sea sediment by a combination of AMS and radiometric methods
Journal of Environmental Radioactivity 102, 4(2011) 331-335

Froehlich M, Steier P, Wallner G
Depth profile of ²³⁶U/²³⁸U in soil samples in La Palma, Canary Islands
Journal of Environmental Radioactivity 102, 6(2011) 614-619

Froehlich M, Mayer K, Hrnecek E, Wallenius M, Varga Z, Steier P, Wallner G
Investigation of the ²³⁶U/²³⁸U isotope abundance ratio in uranium ores and yellow cake samples
Radiochimica Acta 99, 6(2011) 335-339

Froehlich M, Steier P, Wallner G
Determination of the isotopic ratio ²³⁶U/²³⁸U in Austrian water samples
Nuclear Instruments and Methods in Physics Research: Section B 268, 7-8(2010) 1146-1149

Steier P, Dellinger F, Forstner O, Golser R, Knie K, Kutschera W, Priller A, Quinto F, Froehlich M, Terrasi F, Vockenhuber C, Wallner A
Analysis and application of heavy isotopes in the environment
Nuclear Instruments and Methods in Physics Research: Section B 268, 7-8(2010) 1045-1049

Froehlich M, Kogelnig D, Stojanovic A, Korner W, Krachler R, Wallner G
Uranium extraction from aqueous solutions by ionic liquids
Applied Radiation and Isotopes 67, 12(2009) 2146-2149

Quinto F, Steier P, Wallner G, Wallner A, Froehlich M, Bichler M, Kutschera W, Terrasi F, Petraglia A, Sabbarese C
The first use of 236U in the general environment and near a shutdown nuclear power plant
Applied Radiation and Isotopes 67, 10(2009) 1775-1780

Froehlich M, Hrnecek E, Steier P, Wallner A, Wallner G, Bossew P
Vertical distribution of 238Pu, 239(40)Pu, 241Am, 90Sr and 137Cs in Austrian soil profiles
Radiochimica Acta 96, 9-11(2008) 733-738

Steier P, Bichler M, Fifield K, Golser R, Kutschera W, Priller A, Quinto F, Richter S, Froehlich M, Terrasi P, Wacker L, Wallner A, Wilcken K, Wild E, Wilcken K
Natural and anthropogenic ²³⁶U in environmental samples
Nuclear Instruments and Methods in Physics Research: Section B 266(2008) 2246-2250

(35 publications)

Conference paper

Bignell L, Barberio E, Froehlich M, Lane G, Lennon O, Mahmood I, Nuti F, Rahman M, Simenel C, Spinks N, Stuchbery A, Timmers H, Wallner A, Wang L, Wu J, Zhong Y
"SABRE and the Stawell Underground Physics Laboratory: Dark Matter Research at the Australian National University"
Heavy Ion Accelerator Symposium (HIAS 2019) ?, ?(2020) 1-6

Steier P, Hrnecek E, Priller A, Quinto F, Froehlich M, Wallner A, Wallner G, Winkler S
AMS of the minor plutonium isotopes
12th International Conference on Accelerator Mass Spectrometry 294(2013) 160-164

Tims S, Tsifakis D, Froehlich M, Fifield K, Hancock G, De Cesare M
Measurements of low-level anthropogenic radionuclides from soils around Maralinga
Heavy Ion Accelerator Symposium on Fundamental and Applied Science 2013 63(2013)

(3 publications)

Updated: 26 January 2022/ Responsible Officer: Director, RSPhys/ Page Contact: Physics Webmaster

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Dr Michaela Froehlich

Publications

Journal article

Conference paper