Nucleonica Gmbh

What Nucleonica Gmbh does

Nucleonica GmbH is a privately held Karlsruhe-based software company founded in 2011 as a spin-off of the European Commission's Institute for Transuranium Elements (JRC), operating a web-based nuclear science applications platform. Through a license agreement with JRC, Nucleonica holds exclusive rights to further develop and market the Karlsruhe Nuclide Chart, currently in its 12th Edition (2025). The platform bundles a portfolio of validated scientific applications — Decay Engine++ (using exact Bateman equation solutions), Dosimetry & Shielding H*(10), Nuclide Datasheets++, Gamma Spectrum Generator/Pro (Monte Carlo-based), Range & Stopping Power, Nuclide Mixtures, Fission Yields, Cambio++, e-Ship++, WESPA++, and others — drawing on internationally evaluated nuclear data files (JEFF, ENDF, ICRP, JENDL, BROND, CENDL) across more than 3,800 nuclide ground and excited states. The company also publishes the Karlsruhe Nuclide Chart in physical formats (Roll Map, Wallchart, Fold-out, Auditorium Chart) through its online store and a free educational version (KNC light).

Nucleonica serves a global base of scientific and engineering professionals across energy (Westinghouse, CEZ Group, TÜV Süd), research (CERN, CEA, PSI, SCK CEN, KIT, LMU Munich, Princeton, University of Illinois), governmental and regulatory bodies (IAEA, European Commission, BfS, CNSC, AWE, DSTL), and healthcare/pharma (CHUV, Bayer Healthcare) in more than 92 countries. The business model is primarily subscription SaaS (Academic €61/mo, Government €82/mo, Commercial €122.50/mo annual contracts), supplemented by KNCO++ single-user annual licenses at €95/year, custom multi-user/institutional licenses quoted via direct sales, online and in-person training courses (e.g., Nuclear Security training delivered to BfS via video conference), and physical product sales through nuklid.shop. Go-to-market is self-serve via the website with a freemium 7-nuclide tier, supplemented by community-driven marketing (SNETP endorsement, wiki, blog, forums) and direct enterprise engagement for institutional deals. Pricing increases 3% annually on Nucleonica products and 10% per new edition of the KNCO chart.

The company operates with a 1-10 person team led by founder and CEO Dr. Joseph Magill, with managing directors Niels Magill and Raymond Dreher. It is independently held with no disclosed institutional investors and runs profitably on its own cash generation based on the absence of funding rounds. Recent product activity through 2024-2025 — including launch of KNC light and GSGlight for the educational segment, integration of JEFF-4.0 and ENDF/B-VIII.1 data sublibraries, and the 12th Edition 2025 Karlsruhe Nuclide Chart — demonstrates continued investment in product breadth despite the small operating base.

Name

Nucleonica Gmbh

Legal name

Nucleonica GmbH

Website

https://nucleonica.com

Company type

Private

Founded year

2011

Operating status

Operating

Headcount range

1–10 employees

Short description

Nucleonica GmbH operates a web-based nuclear science platform providing validated calculation tools, internationally evaluated nuclear data, and the Karlsruhe Nuclide Chart to professionals in energy, research, healthcare, defense, and education across 92+ countries.

Ownership category

akta.pro rank

Product category

Nuclear Science Software

NAICS

Scientific Research and Development Services (5417), Testing Laboratories and Services (54138)

SIC

Laboratory Analytical Instruments (3826)

akta.pro primary industry

Nuclear Materials Testing, Assay & Characterization Services (NDA/NDE, radiochemistry, materials analysis) (EUAKAIAL)

akta.pro secondary industries

Nonproliferation Technology & Detection (radiation portal monitors, RPMs, spectroscopy, forensics) (EUAKAJAG), Radiation Detection Instruments & Systems (Portal monitors, spectrometers, contamination monitors) (EUAKAIAK), Radiation Safety, Dosimetry & Regulatory Compliance (Nuclear Medicine) (HLAIAGAJ)

Keywords

• Nuclear science software
• Radiation protection tools
• Nuclear data analytics
• Radioactive decay calculations
• Nuclide chart reference

Headquarters

HQ city

Karlsruhe

HQ country

Germany

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Operations, Marketing or Sales, Infrastructure

Revenue model

1. Premium Subscriptions: Subscription-based access to all applications and nuclides. Three tiers: Academic (€61/month), Government (€82/month), and Commercial (€122.50/month or €95/year for basic KNCO++). Multi-user and institutional premium license rates available with discounts.
2. Product Sales - Karlsruhe Nuclide Chart: Sale of physical and digital products including the 12th Edition 2025 Karlsruhe Nuclide Chart, fold-out charts, wallcharts, roll maps, and auditorium charts. Available through online shop at nuklid.shop.
3. KNCO++ Single User License: Annual license for Karlsruhe Nuclide Chart Online at €95 per year. Includes access to KNCO++ and supporting applications.
4. Training Courses: Technical training courses on various Nucleonica scientific applications and tools. Customized training courses available for organizations. Examples include Nuclear Security training course for BfS.

Pricing tiers

Go-to-market motion3 records

Distribution channels4 records

Marketing channels8 records

Core offering

Nucleonica provides a web-based nuclear science applications platform offering validated calculation tools (Decay Engine++, Dosimetry & Shielding H*(10), Nuclide Datasheets++, Gamma Spectrum Generator/Pro, Range & Stopping Power), access to internationally evaluated nuclear data libraries (JEFF, ENDF, ICRP), and the print/digital Karlsruhe Nuclide Chart. The platform is sold via premium subscription tiers and supplemented with training courses and free educational versions such as KNC light and GSGlight.

Product overview

Nucleonica is a web-based nuclear science applications platform offering a portfolio of specialized scientific calculation tools. The core platform consists of multiple validated web-based applications including Decay Engine++ for radioactive decay calculations, Dosimetry & Shielding H*(10) for dose rate calculations, Nuclide Datasheets++ for nuclear data comparison, and Gamma Spectrum Generator/Pro for spectrum simulation. The Karlsruhe Nuclide Chart Online (KNCO++) provides online access to the nuclide chart with search and navigation features. Additional applications include Range & Stopping Power, Nuclide Mixtures, Nuclide Search, Photon Dose Rate Constants++, Gamma Library++, Beta/Neutron Dose Rate, Fission Yields, Cambio++, e-Ship++, and WESPA++. The company also publishes the Karlsruhe Nuclide Chart in various print formats (Roll Map, Fold-out, Wallchart, Auditorium Chart) and offers free educational versions including KNC light. Training courses are available as a service offering. The platform provides access to nuclear data from international evaluated files including JEFF and ENDF for over 3800 nuclide ground and excited states.

Differentiator

Problem solved

Functional benefit

Brands

• Karlsruhe Nuclide Chart (KNC): A comprehensive collection of nuclear data including nuclide ground states and isomers, published in various print and online formats. The online version is KNCO++.
• KNCO++ (Karlsruhe Nuclide Chart Online)
• KNC Light

Products and services

• Nucleonica Premium Web Platform Subscription-based web platform providing validated nuclear science calculation tools and reference data to professional users in energy, research, healthcare, defense, and education. Sold via Academic, Government, and Commercial premium tiers.
• Karlsruhe Nuclide Chart Online (KNCO++) Annual online license to the Karlsruhe Nuclide Chart Online and its supporting applications, available at €95 per year with access to edition comparison features.
• Karlsruhe Nuclide Chart 12th Edition (2025) - Print Editions Physical and digital nuclear data reference products including Roll Map (170x120cm), Fold-out Chart (A4), Wallchart (95cm x 139cm), Auditorium Chart (43cm x 316cm), and Nuclide Carpet formats. Sold via nuklid.shop.
• KNC light (Karlsruhe Nuclide Chart light) Free educational mobile and browser app version of the Karlsruhe Nuclide Chart intended for education and training purposes in nuclear science.
• Gamma Spectrum Generator - GSGlight Free or lightweight educational gamma spectrum generator supporting multiple detector types for teaching and training in radiation detection.
• Training Courses Technical training courses covering Nucleonica scientific applications and tools, available as customized programs for organizations (e.g., Nuclear Security training for BfS) and online for Premium users.

Quantifiable outcome

• Validation within ±10% of MCNP6 calculations for TVL values (Canadian Nuclear Safety Commission verification)
• +2 more outcomes

Named customers19 records

Segments7 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

One partnership is on record.

• European Commission's Joint Research Centre (JRC)coreStrategic or Co-development Partner · 1 January 2011Nucleonica GmbH is a spin-off company from the European Commission's Institute for Transuranium Elements (ITU). The company started operations in early 2011 and is based in Karlsruhe, Germany. Through a license agreement with the JRC, Nucleonica GmbH has exclusive rights to further develop and market the current and future editions of the Karlsruhe Nuclide Chart. The 12th Edition 2025 was developed in collaboration with Zsolt Sóti from the JRC.

Scale indicators5 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• NNDC (Brookhaven National Laboratory): U.S. National Nuclear Data Center providing ENSDF, ENDF, and NuBase evaluations plus online retrieval tools (NuDat, ENDF retrieval). A direct free public-sector competitor to Nucleonica's nuclide data and search functionality, often used as a baseline reference.
• CEA / CEA Saclay Nuclear Data Services: French atomic energy commission producing evaluated nuclear data and publishing nuclear science tools. Comparable to Nucleonica's data services and applications; notably a Nucleonica customer as well, indicating overlap.
• IAEA Nuclear Data Section: Provides evaluated nuclear data libraries, livechart of nuclides, and reference tools. Directly comparable to Nucleonica's KNCO++ and validated data services, and serves as both a customer (per Nucleonica's roster) and a free public alternative.
• NEA Data Bank / JANIS: OECD Nuclear Energy Agency's open-source Java-based nuclear data display and analysis tool, built on JEFF and other evaluated files. Most direct free alternative to Nucleonica's Nuclide Datasheets++, Nuclide Search, and KNCO++ applications.

Broad incumbents

• Mirion Technologies: Large radiation detection and measurement company serving nuclear power, defense, medical, and research markets with instruments, software, and services. Comparable to Nucleonica's dosimetry, gamma spectrum, and shielding applications as part of a much broader instrumentation portfolio.
• Studsvik (Studsvik AB): Swedish nuclear engineering services and software firm offering fuel and reactor analysis tools and decommissioning support. Comparable to Nucleonica's nuclear calculations and training services for energy and decommissioning customers, though broader in scope.
• Thermo Fisher Scientific: Global scientific instrumentation company with extensive nuclear/radiological measurement and lab analytics offerings, including gamma spectroscopy and radiation monitoring. Comparable as a broad incumbent serving overlapping radiation protection and lab analysis use cases.
• Canberra Industries (Mirion): Specializes in radiation detection and spectroscopy systems including HPGe and NaI detectors, with nuclear data analysis software. Overlaps with Nucleonica's Gamma Spectrum Generator, WESPA++, and dosimetry tools, but as part of a hardware-anchored product suite.
• National Nuclear Laboratory (NNL, UK): UK government-owned nuclear technology organization providing R&D, consultancy, and training across the nuclear fuel cycle. Overlaps with Nucleonica's research-focused and training offerings for nuclear science professionals.

Emerging players

• PyNE (PyNuclear Engineering toolkit): Open-source Python toolkit for nuclear science and engineering calculations, used by researchers in academia and industry. Represents the open-source/developer-tool threat layer to Nucleonica's web-based calculation apps.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xtwitter.com/nucleonica
• Facebookfacebook.com/Nucleonica-GmbH-232895613506830
• LinkedInlinkedin.com/company/nucleonica

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Nucleonica Gmbh