Archive for May, 2018

Unidentified peaks in I-125 spectrum

May 30th, 2018

Qu. (from Z. S. JRC Karlsruhe) Using the Gamma Spectrum Generator app in Nucleonica I have created a gamma spectrum for I-125 (shown below). Comparing the results from the Nuclide Datasheets++, I find the three lines at approx. 35, 31, 27 keV (see inset from the Datasheets++). Where do the extra peaks at approx. 21 and 17 keV come from?
UnPeaksAns. (Nucleonica Team)
The additional lines from the I-125 spectrum are X-escape peaks.

Ge emits X-rays at approx. 10 keV (Intensity 48%), 11 keV (intensity 6%), and about 1.2 keV (Intensity 0.5%) so Xesc-peaks can be expected at:
21 keV = 31 keV – 10 keV
20 keV = 31 keV – 11 keV and 21 -1.2

17.6 keV = 27.5 – 10 keV
16.5 keV = 27.5 – 11 keV and 17.6 – 1.2

25.4 keV = 27.5 -1.2 keV
The relative intensities correspond about to the relative Ge X-ray intensities.
More information:
X-Ray Emission Lines
X-ray Escape Peaks

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Action required by users to confirm new privacy policy

May 29th, 2018

Nucleonica Compliance with the EU-GDRP from 25 May 2018:
Nucleonica has updated its Privacy Policy to be compliant with the European Union’s General Data Protection Regulation (EU-GDPR) from 25 May 2018. As a registered user of the Nucleonica portal we need your agreement with this new Privacy Policy.
PP-Agreement

More information:
Nucleonica’s Privacy Policy page

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New Privacy Policy for EU-GDPR (25 May 2018)

May 24th, 2018

Nucleonica has updated its Privacy Policy to be compliant with the European Union’s General Data Protection Regulations (EU-GDPR) from 25 May 2018.
Whether you are a customer or a visitor of our website: we respect and protect your privacy. This Privacy Policy Statement applies to the usage of the online portal at www.nucleonica.com which is operated by Nucleonica GmbH. Nucleonica will not disclose any customer related data to any third party, save as expressly mentioned herein or if required by law or regulation. Additional points covered by the new Privacy Policy include:
– Declaration of consent and authorization
– What type of data is collected by Nucleonica?
– Collection of data during registration
– Collection of data during usage
– Disclosure of data
– How long is my user data stored?
– User Information
– Withdrawal of consent
– Cookies and Tracking

More information:
Nucleonica’s Privacy Policy page

Posted in Karlsruhe Nuclide Chart, Nucleonica | Comments (0)

Feedburner Deactivated

May 3rd, 2018

Because of recent problems, the Feedburner service for managing RSS feeds has been deactivated. The Nucleonica Blog posts are now sent directly to Nucleonica’s Networking page using the WordPress feeds. Users can no longer receive these post feeds via email. However, the most recent feeds are shown directly on the Networking page.

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