Archive for the ‘Nucleonica’ Category

Nucleonica’s GSG & GSGPro: limitation of the number of mixture components

June 16th, 2022

Every nuclide mixture, regardless of the number of components, is now accepted by the applications GSG and GSGPro.
When the number of components exceeds the limit of currently 30 nuclides, the application selects the top 30 strongest gamma emitters from the nuclide inventory to compute the spectrum, no matter if the inventory is the originally submitted mixture, or the result of an internal decay calculation of the application.
The nuclides are selected based on the emitted gamma energy given by:
SumEEP = Σi ( Ei · EPi )
where Ei is the energy of the photon i emitted with the probability EPi during a decay reaction. The sum is built over all photons (gamma, x or annihilation) emitted by the nuclide.
This emitted photon energy (per decay) is then multiplied by the activity of the nuclide if decay is not taken into account otherwise by the number of decays of that nuclide during the measurement time.

The advantages of the new approach are multiple and important for the user:
* The same mixture can be used in different applications, regardless of the maximum supported number of components which may be 30 for the GSG/GSGPro, 400 for the BetaDoseRate, or unlimited as for the most of the applications.
* The user has no longer to delete components of a mixture which may be time consuming, and it is not really easy to select the right nuclides.
* The number of mixtures can be reduced
* When the maximum number of nuclides changes or when another approach is used to reduce the computation time the user has nothing to do but benefits directly from the improvement.

Notices:
* One may also consider the full set of emitted photons and then select the strongest lines independently from the emitting parent and their total number.
* In the Options tab, you can change (Administrators only) the maximum number of nuclides taken into account and compare the accuracy of the resulting spectra as well as the consumed CPU time.

See the related post
Gamma Spectrum Generator for large nuclide inventories

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Nucleonica online training course for UM/LUBW, Video Conference 2022

April 23rd, 2022

Nucleonica Training Course, 20-21 April 2022: Introduction to Nucleonica:
Core Applications and Tools with Exercises

This 2-day training course for
UM (Ministerium für Umwelt, Klima und Energiewirtschaft) /
LUBW (Landesanstalt für Umwelt, Messungen und Naturschutz Baden-Württemberg)
was arranged as a video conference on the 20-21 April 2022. In total 10 staff members from the UM/LUBW and 2 staff members from Nucleonica took part. The course was centred around formal presentations of Nucleonica applications (Decay Engine, Dosimetry & Shielding, Gamma Spectrum Generator, Cambio, and WESPA) together with a case study.
The entire course materials were presented online using the Training Courses app on the Nucleonica website.
Previous Nucleonica training courses.

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New 11th Edition (2022) of the Karlsruhe Nuclide Chart

March 8th, 2022

The 11th Edition 2022 of the “Karlsruher Nuklidkarte” contains new and updated radioactive decay and thermal neutron cross sections data on 1035 nuclides (82 new nuclides) not found in the previous (2018) edition. In total, nuclear data on 4122 experimentally observed ground states and isomers are presented.KNCO11 All thermal fission chain yield data for 235U and 239Pu (with 16 new mass chains) has been updated using the latest values from JEFF3.3 radioactive decay data file from 2018. The thermal neutron cross sections data in nuclide boxes has been also actualized based on the sixth edition of the Atlas of Neutron Resonances (Volume 1-2, author: S.F. Mughabghab, published by Elsevier in 2018).
Most recent values of the atomic weights, isotopic abundances and cross sections are included together with the thermal fission yields for both 235U and 239Pu. For thirteen elements, a range of atomic weights is given to reflect the isotopic variability in natural materials. The accompanying booklet again contains the multi-lingual “Explanation of the Chart of the Nuclides” in English, German, French and Spanish, updated to reflect changes in the Chart. The Reduced Decay Schemes section initiated in previous editions, and used to describe in detail how the nuclide box contents should be interpreted with reference to the nuclide decay schemes, has been considerably expanded.
This new 11th Edition of the Karlsruhe Nuclide Chart is the result of a collaboration between Zsolt Sóti from the EC’s Joint Research Centre and Joseph Magill and Raymond Dreher from the Nucleonica team. The online version of the Karlsruhe Nuclide Chart is available through the Nucleonica nuclear science portal (www.nucleonica.com).

More info…
Online shop
Karlsruhe Nuclide Chart, 11th Edition 2022

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Nucleonica Chat

February 14th, 2022

Nucleonica Chat is a communication software tool developed by the Nucleonica Team to provide easy and spontaneous communication between members of the Nucleonica community (either online or offline) while using the Nucleonica apps. Users may exchange results of calculations, their experience with applications and so on through short messages reinforced by emojis or send files up to a length of 2 MB while working with Nucleonica.
The recipients can be selected from a drop down list of the online users, or from a user selection tool.
Chat posts can also be sent directly to the administrators (for questions, report bugs etc.). In summary, users can send message to:
– all online users (from the users online listed in the drop-down menu)
– all online colleagues (all users from the same organisation)
– offline users (using the Search User button)
– administrators (using the entry in the drop-down menu)
ChatUsers can also directly reply to a user message by clicking on the “From User to me” in the main Chat message window. Files (mixtures, gamma spectra, etc.) can be selected and conveniently uploaded to the selected user.
The chat area presents in chronological order a maximum of 50 messages from the past 100 days, depending on which limit is reached first.

Nucleonica Chat

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Nuclear Security training course for BfS, Video Conference 2021

October 5th, 2021

Nucleonica Training Course on Nuclear Security, 28-29 September 2021
This 1-day training course (format two morning sessions) for BfS staff (Bundesamt für Strahlenschutz BfS) was arranged as a video conference on the 28-29 September 2021. In total 10 staff members from the BfS and 2 staff members from Nucleonica took part.
The course was centred around formal presentations of Nucleonica applications (Decay Engine, Dosimetry & Shielding, Gamma Spectrum Generator, Cambio, and WESPA) together with cases studies concerning medical nuclides ((Sm-153/Eu-152, (I-131/Xe-131m).
The entire course materials were presented online using the recently developed Training Courses app on the Nucleonica website.
Previous Nucleonica training courses.

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Is there an “App” for Nucleonica?

October 5th, 2021

(Qu.) Is it possible to have Nucleonica as an App similar to other apps on mobile devices?

(Ans.)“Real” apps run inside the mobile device. As Nucleonica is a web application that needs a web server, this is not possible.
Some “fake” mobile apps are actually only disguised web browser windows that call web applications. That means they cannot be used if the user has no Internet connection. This might be possible to achieve with Nucleonica but not all pages are optimized to be used on mobile devices yet.

And then there are responsive web apps (like KNCLight) that are a mix of these two (actually a web site running on a web server, but It is possible to install them on the device). But in order to turn Nucleonica into one of these, we would have to create new versions of all the pages first (or create a responsive web app that only contains the pages that have already been recreated). These new versions of the pages have to get all information using AJAX calls (instead of getting everything directly in the HTTP GET as it is the case now).

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JEFF-3.3 (2017) decay data now available in Nucleonica

July 12th, 2021

On November 20, 2017, the JEFF-3.3 datafile was released by the NEA.
The JEFF-3.3 (2017) decay data sublibrary is now available in Nucleonica in addition to the previously used decay data libraries JEFF3.1, EBDF/B-VII.1, and ENDF/B-VIII. It is now possible to compare and contrast the main European (JEFF-3.1, JEFF-3.3) and American (ENDF/BVII.1, ENDF/B-VIII.0) data libraries for differences in half-lives, branching ratios, energies and emission probabilities of the emitted radiations, fission yields, etc. using Nucleonica’s user friendly tools. This data comparison can be accessed through the Options tab of the Nuclide Datasheets++ application.

Reference: JEFF-3.3

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Updated activity limits A1, A2 from IAEA SSR-6 ( Rev.1) 2018

February 18th, 2021

The latest values of the activity limits (A1, A2,…) have been updated in Nucleonica based on the Regulations for the Safe Transport of Radioactive Material 2018 Edition, IAEA, SSR-6 (Rev. 1). New and updated values are available, for example, for the nuclides Tb-149, Sr-83, Ni-57, Ir-193m, Kr-79, Ge-69, Ba-135m, Tb-161, Te-121m. These new and updated values are available within the e-Ship++ application.
SSR-6 2018
Reference
Regulations for the Safe Transport of Radioactive Material 2018 Edition, IAEA, SSR-6 (Rev. 1), page 25 (page 45 in pdf)

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Nucleonica Newsletter 2021

January 2nd, 2021

Happy New Year!
2020 in Review
Dear Nucleonica Users,
2020 has brought many challenges for the Nucleonica Team. In particular the spread of the corona virus has meant that for our colleagues, “working from home” became the default mode of operation. A positive side effect has been the preparation of online training courses via video conferencing. A first course using this technology was a nuclear security training course for staff of the Bundesamt für Strahlenschutz (BfS) arranged as a video conference in September 2020. Both the participants and the presenters were very satisfied.
Another positive side effect was the more focused developments of the Responsive Web Applications (RWD Apps) which are optimised for easy navigation across devices i.e. PCs, tablets and smartphones. Through the use of RWD apps, the applications and Powerpoint presentations could be shown alongside each other in different browser tabs. This feature made the video conferencing extremely useful.
NN_2021 Nucleonica Online Applications
During 2020 the Nucleonica developers have continued to focus on increasing the number of applications available with Responsive Web Design (RWD). These web applications are optimized for easy navigation across multiple devices (i.e. PCs, tablets and smartphones). A further advantage of RWD Apps is their use in training courses, especially where video conferencing is being used. Here the user can adjust the width of the browser so that a presentation on the app can be shown alongside the application.
Dedicated Training Courses
We were also active organizing dedicated Training Courses:
– Introduction to Nucleonica: Core Applications and Tools, 22 January, KTE, Karlsruhe, 2020.
– Online (video conference) Nucleonica Training Course on Nuclear Security, 29-30 September 2020.
Karlsruhe Nuclide Chart, new 10th Edition 2018
Work on the Karlsruhe Nuclide Chart continues with the inputting of new and updated nuclear data and further developments of the online version of the Chart KNCO++ which will be used to prepare future for new editions of the Chart.
We Welcome your Feedback
Again we value the many suggestions and proposals which we received during past year from all partners and users that helped us improve the applications. These developments were made possible in particular through collaboration with our colleagues the Federal Office for Radiation Protection (BfS).

The Nucleonica Team would like to thank you for your continued support.
Best wishes for 2021,
Sincerely yours,
Joseph Magill
Managing Director

Nucleonica Newsletter 2021

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New Nuclear Security Presentation “Uranium Cube” available

November 26th, 2020

A new nuclear security presentation entitled “Uranium Cube” is now available in the Training Courses application in the category Nuclear Security Exercises.
This presentation was prepared for the Nucleonica training course for the Bundesamt für Strahlenschutz (Federal Office for Radiation Protection) in Berlin.
The presentation is available to all Nucleonica users including Free access users.
Haigerloch Uranium Cube from 1943

See also…
Nuclear Security training course for BfS, Video Conference 2020

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