Contact & CV

Current Affiliation

Simulation Technology Research & Development Office
Center for Computational Science & e-Systems
Japan Atomic Energy Agency

Contact Details

Email: alex (at)

Center for Computational Science & e-Systems
Japan Atomic Energy Agency
University of Tokyo Kashiwanoha Campus Station Satellite 4F
178-4 Wakashiba

Tel: 070-1408-9980
Fax: 04-7135-2382

Professional Experience

Apr 2017 - Present
Staff Scientist at Japan Atomic Energy Agency
Kashiwa, Japan

Apr 2014 - Mar 2017
Postdoc Researcher at Japan Atomic Energy Agency
Kashiwa, Japan

Jul 2012 - Mar 2014
Technical Specialist at Cavendish Nuclear
Bristol, UK

Aug 2010 - Mar 2011
JSPS Postdoctoral Fellow (Short Term) at the University of Tokyo
Tokyo, Japan

See LinkedIn for more detail on these posts.


See publications list

Professional Bodies

Nov 2016 - Present
Chartered Physicist (CPhys)

Aug 2016 - Present
Member of the Society for Radiological Protection (MSRP)

May 2013 - Present
Member of the Institute of Physics (MInstP)


Jan 2009 - Jul 2013
University of Bristol, United Kingdom
PhD Soft Matter Physics - Thesis

Oct 2007 - Dec 2008
University of Bristol, United Kingdom
MRes Complexity Sciences - Thesis

Oct 2004 - Jul 2007
University of Warwick, United Kingdom
BSc Mathematics & Physics - Dissertation


English (Native speaker)
Japanese (Full professional profiency, JLPT N1)


18th Mar 2021
Development of the radioactivedecay Python package for radioactive decay calculations
2021 Annual Meeting of the Atomic Energy Society of Japan, Online Meeting

11th Sep 2019
Investigation on distribution of radioactive substances in Fukushima (9) Analysis of temporal changes in ambient dose equivalent rates in forests over 6 years
2019 Fall Meeting of the Atomic Energy Society of Japan, Toyama University, Toyama, Japan

5th Aug 2019
Using PHITS to calculate ambient dose equivalent rates in radiocesium contaminated forests
PHITS Workshop 2019, KEK, Tsukuba, Japan

21st Mar 2019
PHITS Models for Ambient Dose Equivalent Rates in Fukushima’s Radiocesium Contaminated Forests
2019 Annual Meeting of the Atomic Energy Society of Japan, Ibaraki University, Mito, Japan

7th Sep 2018
Advancement of airborne radiation measurement technology: (2) Simulations of unmanned helicopter and LaBr3(Ce) detector used for estimating radiocesium distribution in soil
2018 Fall Meeting of the Atomic Energy Society of Japan, Okayama University, Okayama, Japan

22nd Aug 2018
Simulating gamma spectrometers with PHITS: examples of LaBr3(Ce) airborne detector and shielded HPGe detector inside a vehicle
14th PHITS Workshop, Ibaraki Quantum Beam Research Center, Tokaimura, Japan

29th Mar 2017
Adjoint Photon Transport in PHITS
2017 Annual Meeting of the Atomic Energy Society of Japan, Tokai University, Hiratsuka, Japan

3rd Oct 2016
Continuous Energy Adjoint Transport for Photons in PHITS
ICRS-13 & RPSD-2016, Paris, France

19th Jul 2016
Open Sites with Radiocesium Contaminated Soil: Evaluating Dose Rates and Remediation Strategies
61st Annual Meeting of the Health Physics Society, Spokane, WA, USA

1st Jul 2016
The Effect of 2015 Typhoon Etau on Radiation Dose Rates in River Basins Surrounding Fukushima Daiichi
Goldschmidt 2016, Yokohama, Japan

3rd May 2016
Calculating Dose Rates in Various Settings after the Fukushima Nuclear Disaster
Scottish Universities Environmental Research Centre (SUERC), East Kilbride, UK

14th Dec 2015
Modelling evolution of air dose rates in river basins in Fukushima Prefecture affected by sediment-sorbed radiocesium redistribution
2015 AGU Fall Meeting, San Francisco, CA, USA

17th Sep 2015
Sediment Redistribution and Air Dose Rate Changes in River Basins in Eastern Fukushima Prefecture
2015 Annual Meeting of the Geochemical Society of Japan, Yokohama National University, Japan

10th Sep 2015
F-TRACE Project (15): Tool for calculating air dose rates from arbitrary radiocesium depth profiles and spatial distributions for Fukushima Prefecture
2015 Fall Meeting of the Atomic Energy Society of Japan, Shizuoka University, Japan

22nd Apr 2015
Topographic Effects on Ambient Dose Equivalent Rates from Radiocesium Fallout
M&C + SNA + MC 2015, Nashville, TN, USA

16th Mar 2015
Structure and glassy dynamics in Lennard-Jones liquids
Physics of Structural and Dynamical Hierarchy in Soft Matter, University of Tokyo, Japan

18th Sep 2014
Quantifying the effect of land topography on air radiation dose rates using Monte Carlo radiation transport modelling
2014 Meeting of the Japanese Geochemical Society, University of Toyama, Japan

14th Oct 2011
Experience as a JSPS Fellow
Invited speaker at JSPS Programme Induction Day, University of Bristol, UK

13th Sep 2011
Supercooled liquids, structure, and the glass transition
at CCP5 Annual Meeting, University of Bath, UK

28th Jun 2011
Towards a structural mechanism for the glass transition
at Bristol Colloid Group Industrial Research Day, University of Bristol, UK


6-7 Jul 2016
Simulations of Dose Rate Changes upon Decontamination
at 5th Meeting of the Decontamination Society, Fukushima City, Japan

9-10 Nov 2015
Calculations of Dose Rate Reductions upon Soil Remediation
at Public Meeting on JAEA Research for Environmental Recovery of Fukushima, Fukushima City, Japan

30th May 2015
Fields of View for Environmental Radioactivity
at International Symposium on Radiological Issues for Fukushima’s Revitalized Future, Paruse Iizaka, Fukushima, Japan

15th Dec 2011
Growing networks of icosahedra in a model glass former
at Unifying concepts in glass physics V, Institut Henri Poincare, Paris, France

7th Sep 2011
Using the Topological Cluster Classification to identify slow clusters within Wahnström supercooled liquids
at the 8th Liquid Matter Conference, University of Vienna, Austria

18th Aug 2010
Brownian Dynamics Simulations of Small Colloidal Clusters
at the International Symposium on Non-Equilibrium Soft Matter 2010, Nara, Japan

20th Jul 2010
Simulations of Small Colloidal Clusters
at CECAM: Mesoscale Methods for Colloidal Hydrodynamics, EPFL, Lausanne, Switzerland

9th Mar 2009
Locally favoured structures in Lennard-Jones liquids
at Discussion Meeting on Colloids, grains and dense suspensions: under flow and under arrest, The Royal Society, London, UK