Canada's particle accelerator centre
Centre canadien d'accélération des particules
Centre canadien d'accélération des particules
Isotope Result
Yield Results for a = 204 m = 1 z = 87
Isotope Properties
Isotope Properties
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|||||
|---|---|---|---|---|---|
| Fr204m | |||||
| Half-Life | 1.60 s | Energy [MeV] | 0.041 | Abundance [%] | |
| Spin | (7+) | Mass Exc. [MeV] | 0.64839 | Decay Mode | A,EC+B+ |
| Atomic Mass | 204.001 | Binding Energy [MeV] | 7.73469 | Branching [%] | 90,10 |
Yield Data
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Isotope/ Isomer
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Half-life
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A/q
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Target Material
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Ion Source
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Facility
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Yield Results [1/s]
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Individual Results
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|---|---|---|---|---|---|---|---|---|---|---|---|---|
Avg. Value
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| Fr204g | 1.80 s | 204.00 | Th | Re surface | ISAC | 1.096e+4 | details | |||||
| Fr204g | 1.80 s | 204.00 | U | Re surface | ISAC | 1.585e+5 | details | |||||
| Fr204m | 1.60 s | 204.00 | Th | Re surface | ISAC | 5.600e+3 | details | |||||
| Fr204m | 1.60 s | 204.00 | U | Re surface | ISAC | 4.084e+4 | details |
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Date
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Isotope/ Isomer
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A/q
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Charge State
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Half-life
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Yield [1/s]
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p+ Current [μA]
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Target
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Ion Source
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Facility
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Comment
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|
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2014-11-23 | Fr204g | 204.00 | 1 | 1.80 s | 5.72e+3 | 9.8 | ITW-TM1-ThO#1-LP-SIS | Re surface | ISAC | ||
| 2014-11-15 | Fr204g | 204.00 | 1 | 1.80 s | 1.62e+4 | 9.8 | ITW-TM1-ThO#1-LP-SIS | Re surface | ISAC | ||
| 2011-9-11 | Fr204g | 204.00 | 1 | 1.80 s | 2.50e+3 | 1.9 | UCx #2 | Re surface | ISAC | ||
| 2013-7-15 | Fr204g | 204.00 | 1 | 1.80 s | 2.00e+5 | 8 | ITW-TM1-UCx#6 | Re surface | ISAC | ||
| 2014-9-2 | Fr204g | 204.00 | 1 | 1.80 s | 3.20e+5 | 9.8 | ITE-TM4-UCx#10-LP-SIS | Re surface | ISAC | ||
| 2012-9-2 | Fr204g | 204.00 | 1 | 1.80 s | 1.00e+5 | 9.8 | ITW-TM1-UCx04 | Re surface | ISAC | ||
| 2011-12-3 | Fr204g | 204.00 | 1 | 1.80 s | 1.88e+4 | 9.8 | UCx #3 | Re surface | ISAC | ||
| 2013-9-16 | Fr204g | 204.00 | 1 | 1.80 s | 4.83e+4 | 8 | ITW-TM1-UCx#7 | Re surface | ISAC | ||
| 2012-11-1 | Fr204g | 204.00 | 1 | 1.80 s | 4.20e+5 | 9.8 | ITE-TM4-UCx#5 | Re surface | ISAC | ||
| 2014-11-23 | Fr204m | 204.00 | 1 | 1.60 s | 1.90e+3 | 9.8 | ITW-TM1-ThO#1-LP-SIS | Re surface | ISAC | TGHT 230A; 1800 deg C | |
| 2014-11-15 | Fr204m | 204.00 | 1 | 1.60 s | 5.60e+3 | 9.8 | ITW-TM1-ThO#1-LP-SIS | Re surface | ISAC | ||
| 2011-9-11 | Fr204m | 204.00 | 1 | 1.60 s | 9.90e+2 | 1.9 | UCx #2 | Re surface | ISAC | ||
| 2014-9-2 | Fr204m | 204.00 | 1 | 1.60 s | 7.67e+4 | 9.8 | ITE-TM4-UCx#10-LP-SIS | Re surface | ISAC | ||
| 2012-9-2 | Fr204m | 204.00 | 1 | 1.60 s | 3.60e+4 | 9.8 | ITW-TM1-UCx04 | Re surface | ISAC | ||
| 2011-12-3 | Fr204m | 204.00 | 1 | 1.60 s | 6.50e+3 | 9.8 | UCx #3 | Re surface | ISAC | ||
| 2012-11-1 | Fr204m | 204.00 | 1 | 1.60 s | 8.40e+4 | 9.8 | ITE-TM4-UCx#5 | Re surface | ISAC |
(*) Average value of selected yield results, click 'details' to display individual results.
Beam Development
Records retrieved on Fri Feb 13 2026 11:49:53 GMT-0800 (Pacific Standard Time)