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--- en:hydro:isotopes [2022/06/28 09:38] – ckuells
+++ en:hydro:isotopes [2022/06/28 10:56] – [Equilibrium fractionation] ckuells
@@ Zeile 29: / Zeile 29: @@
 $$\delta { }^{18}O = \frac{R_{Standard}-R_{Probe}}{R_{Standard}} \cdot 1000 $$
-Hence, once the  isotope ratio $R_{Probe}$ has been calculated, it can be converted to a $\delta$ value using that relationship.
+Hence, once the  isotope ratio $R_{Probe}$ has been calculated, it can be converted to a $\delta$ value using that relationship. Many $\alpha$ values can be found at [[https://alphadelta.ggl.ulaval.ca/temp_select_page.html|alphadelta]]
 <code S| Fractionation.R>
@@ Zeile 110: / Zeile 110: @@
 </code>
+If you do not have R or your computer or do not want to install it now, you can use the window below to run the code online. Just copy the R code in the (grey) block and insert it into the window. The example code can be deleted.
+{{url>https://rdrr.io/snippets/embed/ 700,400 scroll noborder|Code}}
 ===== Non-equilibrium fractionation =====
@@ Zeile 181: / Zeile 185: @@
 $$R = R_0 \cdot f^{\left(\alpha-1\right)}$$
-<code S|Rayleigh.R>
+Code for Rayleigh fractionation. Please not that it requires the function equilibrium that is provided above. To run this code, you can add it to the first block of code at the bottom and execute the entire block - the function is then available.
+<code S| Rayleigh.R>
 alpha18O <- equilibrium(10)$alpha18O
 fR      <- seq(0.9,1,0.001)
@@ Zeile 188: / Zeile 194: @@
 plot(fR,R, type="l")
 </code>