Nucleonica Newsletter 2021

January 2nd, 2021
by Joseph Magill

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
by Joseph Magill

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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Nuclear Security training course for BfS, Video Conference 2020

October 6th, 2020
by Joseph Magill

Nucleonica Training Course on Nuclear Security, 29-30 September 2020
This 1-day training course for BfS staff (Bundesamt für Strahlenschutz BfS) was arranged as a video conference on the 29-30 September 2020. In total 14 staff members from the BfS and 3 staff memebers 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 a uranium cube which originated in Haigerloch. Haigerloch Uranium Cube from 1943The Haigerloch uranium cube.
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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Decay Engine – Daughter activities zero?

June 23rd, 2020
by Joseph Magill

Qu.) PB, CERN, Switzerland
Dear Nucleonica Team,
I wanted to make a quick test to validate a part of a code one colleague developed, by decaying 1 Bq of Fm-257 during 1 second. please find below the result:
Fm257 Decay We were surprised to see that for many daughter radionuclide, activity calculated is zero. We found on our side very low activities (1.192E-6 for Cf-253 / 8.818E-13 for Cm-249 / 6.172E-13 for Es-253 / <1E-18 for the other).

I was wondering if you applied like a cut of, meaning if the activity is below a certain value, you show 0? If yes, what is this cut off?

(Ans. Nucleonica Team)
We do indeed we apply a threshold: when the number of atoms for a nuclide is less than 0.5 and also if its activity is less than 1% from the total activity the number of atoms for this nuclide is set to 0. In the Decay Tree tab (a section is shown below) the cut off is not applied so you can see the calculated number of atoms.
DecayTree-Fm257 To avoid the problem of zero activites, you have always the possibility to use a higher starting quantity e.g. 1 GBq or 1 Tbq. We are currently considering suppressing the cut-off, in which case the results in the main tab will be similar to those in the Decay Tree tab.

Posted in FAQs | Comments

Confusing use of prefixes with half-lives

March 11th, 2020
by Joseph Magill

Qu.) RB, MINDEF, Netherlands
Dear Nucleonica Team,
I would like to report a confusing use of prefixes in Nucleonica concerning the halflife-values of radionuclides. In the paper version of the KNC, as well as in the online KNCO, the values are in powers of ten (T½ U-238 = 4.5E9). But in the “Universal Nuclide Chart” and the “Dosimetry and Shielding++” the unit is in years with prefixes, like mega-years (My) and giga-years (Gy). Especially that last one is really confusing, since Gy also stands for Gray. Why the use of these prefixes, which are not only unusual, but also confusing? Note; the very high halflife-values are in powers of ten, as I expect it to be, e.g. Bi-209.

(Ans. Nucleonica Team)
You are correct, the display of the half-lives is indeed not consistent in the Apps, KNCO and UNC. In particular the Gy for gigayears is really confusing. Every time we give a Nucleonica training course this always comes up. Users do think this is Gray! We have now initiated an update procedure where the use of hte units is consistent throughout Nucleonica. First results can already be seen in the UNC and other apps.

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App Portal Update

February 19th, 2020
by Joseph Magill

The App Portal application has been updated. The app tiles now contain only a single colour (instead of the previously used 2 colours) and the full name (rather than the short name) of the application.
APrwd The app portal has a new simplified interface allowing users to navigate more efficiently and find a particular app more easily.

More info…
App Portal wiki page
Previous App Portal design

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New Training Course App

February 19th, 2020
by Joseph Magill

To assist with the live training courses which the Nucleonica Team holds regularly, a new application “Training Courses” (shown below) has been developed. Rather than provide the course materials on USB-sticks, etc. the presentations, exercises, agenda, supplementary files, etc. are now available directly online in Nucleonica. The image shows, for example, the contents of the Training Courses “AllPresentations” and “Nuclear Security Exercises”. Once a training course has been selected, all available presentations are listed in the Presentations grid.
TCs On clicking a particular item, the presentation (pdf) opens directly in a new browser tab. The courses can only be “seen” by participants at a particular course e.g. only BfS participants can access the Nov. 2019 training course “BfS-Nov.2019”.
In addition to the courses, the app contains links to all the main applications (AllPresentations) in Nucleonica.

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Cambio File Converter with new features

January 15th, 2020
by Joseph Magill

The Cambio file converter application has been upgraded with a number of new features:
– The application has undergone a major redesign to make it more compatible with tablet and mobile devices based on the principles of Responsive Web Design.
CambioRWDfThe Cambio user inteface for mobile devices/smartphones.

– Converted spectra in .spe format can be saved directly in mySpectra, where they are then available to other applications. Alternatively, files in mySpectra can be selected and compared in the Spectrum tab.
– It is now possible to upload multiple files in a single step. Files can be selected and uploaded or alternatively a zip file can be selected and uploaded. Following conversion to the required format, the files appear in a grid where they can be downloaded individually or in a single step (in the case of a zip file). Alternatively the files can be saved in mySpectra.
– In the Spectrum tab, multiple graphs can be shown and compared. A new feature allows a spectrum to be selected and shifted vertically in the graph for better comparison with other spectra.

More Information…
Responsive Web Design (Wikipedia)
Cambio wiki page

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Nucleonica Newsletter 2020

January 2nd, 2020
by Joseph Magill

Happy New Year!
2019 in Review
Dear Nucleonica Users,
Hopefully you had a great start into the New Year, and we wish you every success in 2020. For the Nucleonica Team, a major focus over the past year was again the development and improvement of new and existing applications. Detailed information on these activities is described in this Newsletter. Some highlights were:
– In connection with the United Nations designation of 2019 as the international year of the periodic table of the chemical elements, a new paper on the Karlsruhe Nuclide Chart was published.
– A further highlight was the updating of the Nucleonica physical constants to the latest CODATA recommended values.
– The Nuclear Security Exercises developed jointly with the Federal office of Radiation Protection (BfS) have been released for all Nucleonica users.
– The transport application e-Ship++ has been updated to include Transport Security Thresholds
– A new Training application has been developed for support to the Nucleonica Training Courses.
NN-2020

Best wishes for 2020,
Sincerely yours,
Joseph Magill
Managing Director

More information…
Nucleonica Newsletter 2020
Previous Newsletters
Nucleonica Newsletter 2019
Nucleonica Newsletter 2018
Nucleonica Newsletter 2017
Nucleonica Newsletter 2016
Nucleonica Newsletter 2015
Nucleonica Newsletter 2014
Nucleonica Newsletter 2013
Nucleonica Newsletter 2012

Posted in Karlsruhe Nuclide Chart, Nucleonica | Comments

“Short-lived decay products included” Option in Nuclide Mixtures

November 29th, 2019
by Joseph Magill

(Qu.) FB, INE KIT Karlsruhe
Dear Nucleonica Team,
We face the problem that the “Short-lived decay products included” option yields results for some nuclei twice – the ones which are already in the input (from calculation results from another program) and the ones which are calculated by the short-lived decay products option in Nucleonica.
Is there any way to avoid this?

(Ans. Nucleonica Team)
For mixtures it is sometimes a problem to known if the short-lived daughters have to be included or not. To avoid counting such nuclides twice, we will de-activate the option include short-lived daughters for mixtures in the radiological converter.
This is already the case in the Dosimetry and Shielding H*(10) application. When single nuclides are selected, the option include short-lived daughters is again set by default for single nuclides.

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