374 MeV \(^{34}\)S\(^{8+}\) through 5 mg/cm\(^2\) Be production target leaves 9.7(2) MeV/u \(^{34}\)S with the charge state distribution below.
| Charge State | Fraction (%) |
| 16 | 73.5 |
| 15 | 25.5 |
| 14 | 1 |
| 13 | 0.01 |
| 12 | 6e-5 |
Note from Bob Scott on the \(^{34}\)S charge state: From: Scott, Robert H. The peak c.s. for \(^{34}\)S is 8+, you get about 1/3 peak output for 10+, 11+ output is reduced from 10+ to 1/3.
My reply to Matt Hendricks on minimum energy: Acceptable Low-Energy for 34S: 374 MeV (11 MeV/u). Acceptable beam current limit: >250 particle nano-Amps (> 2 euA for 34S8+ I believe).
Response from Richard Pardo: The 2.2 euA of 34S8+ would be 275 pnA. With 60% transmission that would be. 165pnA. Doubling that assuming some source improvement and higher enrichment then gets us to the 325 pnA regime at the gas cell. So we definitely don’t want to strip this to get higher energy. I hope our “G” cryo repairs work and we have a reliable resonator operation for that cryostat by August.
Bob Scott purchased enriched material: 99.5% 34S for $4.8/mg. I have a quote for 400mg at a total of $1944.00 USD.