MBBC-HE0106 Mössbauer He/N2 Cryostat
The Bath Cryostat MBBC-HE0106 is designed for low-temperature Mössbauer spectroscopy with the Mössbauer source at ambient temperature. The cryostat is entirely made of stainless steel. A silicon diode DT-670 inside the cryostat is used as temperature sensor for the temperature controller TR-50.
Features
- Liquid helium and liquid nitrogen operation
- Temperature range from 2.2 K (He) or 56 K (N2) by pumping down up to 330 K
- Temperature gradients less than 0.3 K (sample in He or N2 atmosphere)
- Long stand times due to low cooling liquid consumption (e.g. He ~ 0.164 l/h)
- Top-loading Mössbauer cryostat
- Easy sample change in cold condition
- Sample holder with a cylindrical hole of Ø = 20 mm for sample insert
Technical Specifications
| Technical Characteristics (standard version) | |
|---|---|
| Temperature range | He: 2.2 K (by pumping off He gas) - 330 K N2: 56 K (by pumping off N2 gas) - 330 K |
| Temperature stability | ≤ 0.3 K |
| Temperature gradient | ≤ 0.3 K |
| LN2 Volume | 8.4 l |
| LHe Volume | 5.1 l |
| LN2 stand time | 7 days (filling helium bath and nitrogen bath with nitrogen) |
| LHe stand time | 24 h (in unheated condition at LHe temperature) |
| γ-radiation absorption by Windows | < 1% |
| Materials | |
| Cryostat body | Stainless steel |
| Windows | Mylar |
| Sample holder | Copper |
| Physical | |
| Diameter of Mössbauer absorber | 20 mm |
| Distance between outer windows | 40 mm |
| Length of cryostat | 900 mm |
| Diameter of cryostat | 255 mm |
| Weight | 30 kg |
| Special Versions (longer stand times) | |
| 31 h stand time | 950 mm length, 6.5 l LHe |
| 38 h stand time | 1000 mm length, 8.0 l LHe |
| 45 h stand time | 1050 mm length, 9.5 l LHe |
Specifications
| Temperature stability | equal or better than 0.3 K |
| Temperature gradient | equal or smaller than 0.3 K |
| LHe Volume | 5.1 l |
| LHe stand time | 24 h (in unheated condition at LHe temperature) – see special versions further below) |
| Absorption of γ-radiation by Windows | < 1 % |
| Cryostat body | Stainless steel |
| Windows | Mylar |
| Sample holder | Copper |
| Diameter of Mössbauer absorber | 20 mm |
| Distance between outer windows | 40 mm |
| Length of cryostat | 900 mm |
| Diameter of cryostat | 255 mm |
| Weight | 30 kg |
| LHe stand time (approx.) | Length of cryostat (about) |
| 31 h | 950 mm |
| 38 h | 1000 mm |
| 45 h | 1050 mm |