E-CodeReactor decay heat after shutdown — a TI-84 Plus CE program
DECAYHT is a TI-BASIC program for the TI-84 Plus CE. Way-Wigner type correlation P/P0 = C[t^-0.2 - (t+T)^-0.2]: decay power fraction, power, and energy released between two times after shutdown.
What it asks for and what it shows
It asks for 5 values at its prompts. In the example below it shows P/P0 %, P MW, E GJ.
Example run
One of its oracle test cases: “1-year run, 100 s to 1 h”. The inputs are typed in order, and the results are the values the case expects on the screen.
| Step | Value |
|---|---|
| You enter | |
| Input 1 | 0.066 |
| Input 2 | 3000 |
| Input 3 | 31500000 |
| Input 4 | 100 |
| Input 5 | 3600 |
| The screen shows | |
P/P0 %= | 2.418634689 |
P MW= | 72.55904067 |
E GJ= | 141.4431104 |
How it's checked
4 test cases, each checked against an independent method. Replayed key by key on a virtual TI-84 Plus CE, they make 18 checks.
How E-Code checks every program
Run it or put it on your calculator
- Open the library in the TI-84 Plus CE calculator and pick “Reactor decay heat after shutdown” (DECAYHT).
- Put it on your own calculator with a computer and a USB cable, or type it in by hand.
Related programs
- Radioactive decay chain (Bateman)
- Four-factor formula and criticality
- Point reactor kinetics, step reactivity
- Gamma shielding and dose geometry
- Neutron moderation: xi and collisions
All TI-84 Plus CE engineering programs · All TI-84 Plus CE programs