Yields of the isotopes of the element: Francium

201, 202m, 207, 211, 221, 222, 229, 202, 203, 204, 214m, 220, 230, 200, 210, 219, 204m, 206m, 209, 213, 218, 224, 200m, 214, 223, 227, 205, 226, 228, 204, 218m, 225, 206, 208, 212 Fr
Element A number Half life SC or PSB* Yield at ISOLDE Target material
(ions/µC)
Fr 200 49 ms    PSB 1.0E-01 ThCx
Fr 201 - g 48 ms    SC 1.0E+00* UCx
Fr 202 - g 0.34 s    SC 7.1E+01* UCx
Fr 203 - g 0.55 s    SC 2.1E+05* ThCx
Fr 203 - g 0.55 s    SC 1.0E+03* UCx
Fr 204 - g 1.7 s    SC 1.9E+06* ThCx
Fr 205 - g 3.85 s   SC 2.0E+07* ThCx
Fr 205 - g 3.85 s   SC 1.7E+05* UCx
Fr 206 - g 15.9 s   SC 3.6E+06* ThTa
Fr 206 - g 15.9 s   SC 2.4E+06* UCx
Fr 207 - g 14.8 s   SC 4.2E+08* ThCx
Fr 207 - g 14.8 s   SC 3.6E+06* UCx
Fr 208 - g 59.1 s  SC 5.3E+08* ThCx
Fr 208 - g 59.1 s   SC 2.5E+07* UCx
Fr 209 - g 50.0 s   SC 1.3E+09* ThCx
Fr 209 - g 50.0 s  SC 7.5E+07* UCx
Fr 210 - g 3.18 m   SC 1.9E+09* ThCx
Fr 210 - g 3.18 m   SC 1.3E+08* UCx
Fr 211 - g 3.10 m  SC 3.2E+09* ThCx
Fr 211 - g 3.10 m   SC 1.5E+08* UCx
Fr 212 - g 20.0 m  SC 3.9E+09* ThCx
Fr 212 - g 20.0 m  SC 1.6E+08* UCx
Fr 213 - g 34.6 s    SC 4.2E+09* ThCx
Fr 213 - g 34.6 s    SC 3.4E+07* UCx
Fr 214 - g 5.0 ms   SC 9.4E+02* UCx
Fr 218 - g 1.0 ms   SC 4.3E+03* UCx
Fr 219 - g 20 ms   SC 8.9E+03* UCx
Fr 220 - g 27.4 s    SC 6.0E+08* ThCx
Fr 220 - g 27.4 s    SC 3.8E+07* UCx
Fr 221 - g 4.9 m    SC 8.9E+08* ThCx
Fr 221 - g 4.9 m    SC 2.8E+07* UCx
Fr 222 - g 14.2 m   SC 1.2E+09* ThCx
Fr 222 - g 14.2 m   SC 1.0E+07* UCx
Fr 223 - g 21.8 m  SC 1.2E+09* ThCx
Fr 224 - g 3.33 m   SC 4.7E+09* ThCx
Fr 224 - g 3.33 m   SC 1.4E+06* UCx
Fr 225 - g 4.0 m    SC 1.0E+09* ThCx
Fr 226 - g 49 s  SC 1.1E+09* ThCx
Fr 226 - g 49 s   SC 3.6E+05* UCx
Fr 227 - g 2.47 m   SC 4.2E+08* ThCx
Fr 228 - g 38 s    SC 4.2E+08* ThCx
Fr 228 - g 38 s    SC 8.9E+04* UCx
Fr 229 - g 50 s    SC 3.8E+04* UCx
Fr 230 - g 19.1 s   SC 5.6E+03* UCx

*In the ISOLDE Yield Database the beam intensities for isotopes of the elements measured at ISOLDE PSB (PS Booster with 1.0 or 1.4 GeV protons) are presented. For isotopes where no new yields are listed yet from the PSB, one can get an idea from looking at the available SC yields (0.6 GeV protons).

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For more information please contact the ISOLDE Physics Coordinator, Karl Johnston
For more details please contact the ISOLDE RIB development Group, Thierry Stora
Database and web application created by: Manuela Turrion & Urszula Herman-Izycka