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docs/schemes/ho/ho-004.md

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+# Ho scheme 4
+
+## Notes
+
+Used for high-resolution spectroscopt offline at RISIKO (Mainz University) with PI-LIST. Alternative to high-efficiency 405.5nm first step scheme. This here has a longer 1st excited state lifetime (measured as tau = 197ns).  
+  
+Info on HFS and isotope shifts for 163,165,166mHo in linked publication.
+
+
+
+## Scheme
+
+**Ionization Potential**: 48567.000 cm⁻¹ ([NIST ASD, 2024](https://www.nist.gov/pml/atomic-spectra-database))  
+**Lasers used**: Ti:Sa
+
+### Scheme table
+
+| Step | λ (nm)  | From (cm⁻¹) |                                                  Term                                                  | To (cm⁻¹) |                                                  Term                                                  |
+| ---- | ------- | ----------- | ------------------------------------------------------------------------------------------------------ | --------- | ------------------------------------------------------------------------------------------------------ |
+| 1    | 410.224 | 0.00        | 4f<sup>11</sup> 6s<sup>2</sup> <sup>4</sup>I<sup>o</sup>, J = 15/2                                     | 24376.93  | 4f<sup>10</sup> 5d<sup>2</sup> (<sup>3</sup>F) (<sup>7</sup>H) 6s, J = 15/2                            |
+| 2    | 800.203 | 24376.93    | 4f<sup>10</sup> 5d<sup>2</sup> (<sup>3</sup>F) (<sup>7</sup>H) 6s, J = 15/2                            | 36873.76  | 4f<sup>11</sup> (<sup>4</sup>I<sup>o</sup><sub>13/2</sub>) 6s 7s (<sup>3</sup>S<sub>1</sub>), J = 13/2 |
+| 3    | 837.841 | 36873.76    | 4f<sup>11</sup> (<sup>4</sup>I<sup>o</sup><sub>13/2</sub>) 6s 7s (<sup>3</sup>S<sub>1</sub>), J = 13/2 | 48809.20  |                                                                                                        |
+
+
+### Scheme drawing
+
+![ho scheme, light mode](ho-004/ho-004-light.png#only-light)
+![ho scheme, dark mode](ho-004/ho-004-dark-web.png#only-dark)
+
+#### Download scheme drawing
+
+|                                            Light color                                            |                                           Dark color                                           |
+| ------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------- |
+| [PDF](ho-004/ho-004-light.pdf) , [PNG](ho-004/ho-004-light.png) , [SVG](ho-004/ho-004-light.svg)  | [PDF](ho-004/ho-004-dark.pdf) , [PNG](ho-004/ho-004-dark.png) , [SVG](ho-004/ho-004-dark.svg)  |
+
+
+## References
+
+  - [Heinke (2019)](https://doi.org/10.25358/openscience-2346){target="_blank"}
+
+  - [Get config file](https://github.com/RIMS-Code/rims-code.github.io/blob/main/db/ho-004.json)
+
+
+
+## Submitted by
+
+Reinhard Heinke
+