Convert Femtobecquerels to Rutherfords
Convert Femtobecquerels (fBq) to Rutherfords (Rd) instantly and accurately.
Conversion Formula
Rd = fBq × 1.000000000e-21
About Femtobecquerels
The femtobecquerel (fBq) equals 10⁻¹⁵ Bq, used in accelerator mass spectrometry (AMS) to quantify cosmogenic radionuclides (¹⁰Be, ³⁶Cl) in ice cores and geological samples. Ultra-low-background counting in deep underground laboratories reaches the fBq/kg level for solar neutrino detector purity assessment. 1 fBq = 10⁻¹⁵ Bq = 10⁻³ pBq.
About Rutherfords
The rutherford (Rd) equals exactly 10⁶ Bq = 1 MBq. Proposed by Ernest Rutherford and adopted at the 1946 Montreal Conference on Radioactivity as a convenient unit for large sources. Superseded by the MBq in SI but still encountered in older nuclear physics and reactor engineering literature. 1 Rd = 10⁶ Bq.
Quick Reference Table
| Femtobecquerels (fBq) | Rutherfords (Rd) |
|---|---|
| 1 fBq | 1 × 10-21 Rd |
| 2 fBq | 2 × 10-21 Rd |
| 5 fBq | 5 × 10-21 Rd |
| 10 fBq | 1 × 10-20 Rd |
| 25 fBq | 2.5 × 10-20 Rd |
| 50 fBq | 5 × 10-20 Rd |
| 100 fBq | 1 × 10-19 Rd |