add isotope Fe-55

Author: NuclearPhoenixx

assets/images/spectra-th/Fe-55.png

@@ -0,0 +1,29 @@
+---
+title: Iron-55
+header:
+  teaser: /assets/images/spectra-th/Fe-55.png
+#date: 2022-06-07 21:00:00 +0200
+last_modified_at: 2025-01-03 22:00:00 +0200
+---
+
+Iron-55 (<sup>55</sup>Fe) is a radioactive isotope of iron with a nucleus containing 26 protons and 29 neutrons. It decays by electron capture to <sup>55</sup>Mn and this process has a half-life of 2.737 years. The emitted X-rays can be used as an X-ray source for various scientific analysis methods, such as X-ray diffraction. <sup>55</sup>Fe is also a source for Auger electrons, which are produced during the decay.
+
+The K-alpha X-rays emitted by the <sup>55</sup>Mn after the electron capture have been used as a laboratory source of X-rays in various X-ray scattering techniques. The advantages of the emitted X-rays are that they are monochromatic and are continuously produced over a years-long period. No electrical power is needed for this emission, which is ideal for portable X-ray instruments, such as X-ray fluorescence instruments.
+
+### Spectrum ([Fullscreen](/assets/spectra/Fe-55.html))
+
+<iframe width="100%" height="500" src="/assets/spectra/Fe-55.html" title="Fe-55 gamma spectrum" frameborder="0" allowfullscreen></iframe>
+10 minute measurement with a High Purity Germanium (HPGe) radiation detector.
+
+### Metadata
+
+| Isotope:        | Iron     |
+| --------------- | -------- |
+| Mass number:    | 55       |
+| Atomic number:  | 26       |
+| Neutron number: | 29       |
+| ...             | ...      |
+
+### Sources and Further Read
+
+- [https://en.wikipedia.org/wiki/Iron-55](https://en.wikipedia.org/wiki/Iron-55)