DP Physics (last assessment 2024)
Question 19M.3.HL.TZ2.b
| Date | May 2019 | Marks available | [Maximum mark: 2] | Reference code | 19M.3.HL.TZ2.b |
| Level | HL | Paper | 3 | Time zone | TZ2 |
| Command term | Describe | Question number | b | Adapted from | N/A |
b.
[Maximum mark: 2]
19M.3.HL.TZ2.b
Describe the r process which occurs during type II supernovae nucleosynthesis.
[2]
Markscheme
«successive» rapid neutron capture ✔
faster than «β» decay can occur ✔
results in formation of heavier/neutron rich isotopes ✔
OWTTE
Examiners report
Many candidates could describe the r process correctly but quite a large number of candidates seemed completely at a loss and could not relate the r process to neutron capture.
