Available cocktails in RADEF
In the table below are the experimental values for the LET of RADEF ions in silicon targets, as well as corresponding estimates from the SRIM-2003.26 code for comparison. The LET values for these same ions but different energies can be calculated using the semi-empirical estimations based on the classical Bohr theory for electronic stopping. More details on the estimation process are to be published.
9.3 MeV/u cocktail
| Ion | Energy [MeV] |
LETMEAS @surface [MeV/mg/cm2] |
LETMEAS @Bragg peak [MeV/mg/cm2] |
LETSRIM @surface [MeV/mg/cm2] |
RangeSRIM [microns] |
LETSRIM @Bragg peak [MeV/mg/cm2] |
| 15N+4 | 139 | 1.87 | 5.92 (@191 um) | 1.83 | 202 | 5.9 (@198 um) |
| 20Ne+6 ‡ | 186 | 3.68 | 9.41 (@138 um) | 3.63 | 146 | 9.0 (@139 um) |
| 30Si+8 | 278 | 6.74 | 13.7 (@114 um) | 6.40 | 130 | 14.0 (@120 um) |
| 40Ar+12 ‡ | 372 | 10.08 | 18.9 (@100 um) | 10.2 | 118 | 19.6 (@105 um) |
| 56Fe+15 | 523 | 18.84 | 29.7 (@75 um) | 18.5 | 97 | 29.3 (@77 um) |
| 82Kr+22 | 768 | 30.44 | 41.7 (@68 um) | 32.2 | 94 | 41.0 (@69 um) |
| 131Xe+35 | 1217 | 54.95 | 67.9 (@57 um) | 60.0* | 89* | 69.2 (@48 um) |
NOTE. Mass-to-charge ratio of 20Ne+6 and 40Ar+12 differs from that of the other ions in the high penetration cocktail. Due to this difference we recommend to use these two elements sequentially (if possible), thus sparing time otherwise spent tuning the beam line.
Ion species in Table 1 can also be delivered at lower energies (i.e. down to 4 MeV/amu) at request. Thus different LET and range values are obtained. Changing the beam species to an ion with a different mass-to-charge ratio takes 4 hours on average.
16.3 MeV/u cocktail
| Ion | Energy [MeV] |
LETSRIM @surface [MeV/mg/cm2] |
RangeSRIM [microns] |
| 17O+6 | 284 | 1.52 | 481 |
| 20Ne+7 | 328 | 2.34 | 360 |
| 40Ar+14 | 657 | 7.16 | 264 |
| 57Fe+20 | 941 | 13.4 | 212 |
| 83Kr+29 | 1358 | 24.6 | 185 |
| 126Xe+44 | 2059 | 48.5 | 157 |
