Convert Curies per kilogram to Femtobecquerels per kilogram
Convert Curies per kilogram (Ci/kg) to Femtobecquerels per kilogram (fBq/kg) instantly and accurately.
Conversion Formula
fBq/kg = Ci/kg × 3.700000000e+25
About Curies per kilogram
The curie per kilogram (Ci/kg) equals 3.7 × 10¹⁰ Bq/kg = 37 GBq/kg. High specific activity sealed sources: ¹¹¹In and ¹³³Xe produced in accelerators are characterised in Ci/kg; ⁴²K formed by neutron activation in high-potassium food samples in research irradiators reaches Ci/kg values. 1 Ci/kg = 3.7 × 10¹⁰ Bq/kg.
About Femtobecquerels per kilogram
The femtobecquerel per kilogram (fBq/kg) equals 10⁻¹⁵ Bq/kg. Used in accelerator mass spectrometry (AMS) to quantify cosmogenic radionuclide concentrations (¹⁰Be, ³⁶Cl) in ice cores, sediments, and geological minerals where activities per unit mass are at the femto-level. Ultra-clean radiochemistry purity assessments for solar neutrino detectors also reach fBq/kg sensitivities. 1 fBq/kg = 10⁻¹⁵ Bq/kg.
Quick Reference Table
| Curies per kilogram (Ci/kg) | Femtobecquerels per kilogram (fBq/kg) |
|---|---|
| 1 Ci/kg | 3.7 × 1025 fBq/kg |
| 2 Ci/kg | 7.4 × 1025 fBq/kg |
| 5 Ci/kg | 1.85 × 1026 fBq/kg |
| 10 Ci/kg | 3.7 × 1026 fBq/kg |
| 25 Ci/kg | 9.25 × 1026 fBq/kg |
| 50 Ci/kg | 1.85 × 1027 fBq/kg |
| 100 Ci/kg | 3.7 × 1027 fBq/kg |