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microCRYO102 Print
  • Continuous flow cryostat for microscopy/spectroscopy
Sample in vacuum

The microCRYO102 is a compact continuous flow cryostat. A cooling agent (liquid helium or liquid nitrogen) is transferred from a storage dewar through a vacuum isolated transfer line to the heat exchanger. The sample is mounted on the cold table of the heat exchanger. The heat exchanger with the sample are placed into pumped out interior of the cryostat body. The cold table arrangement is positioned within the copper shield, cooled by outgoing cryogen flow. The sample temperature is controlled by a temperature controller unit tSTAT310xc. The electronic unit forms a continuous flow of cooling agent from the dewar, controls the power of the electrical heater at the cold table as well as the flow rate of the cryogen by differential pressure regulator and needle valve opening in the gas-flow regulator set. The design enables the use of high magnification microscope objectives and secures the high aperture for the reflectivity measurements.

The sample-to-objective distance can be varied to meet optimal conditions for reflectivity measurements and microscopy. Modifications for transmission and reflection are available. The cryostats can be equipped by windows compatible to visible, UV and IR spectral regions.

The design of the cryostat enables rapid heating and cooling pocesses. Special design of the cold table secures low magnitude of vibrations and small temperature drifts. For electrical measurements the cryostats are equipped with a multipin connector. Cryostat can be equipped with a 0.2 T water cooled magnet for magneto-optical measurements.

Basic parameters and modifications of microCRYO102 cryostats

Modification

microCRYO102HE

microCRYO102N2

Cooling agent

He

N2

Maximal sample dimensions, mm

Ø10 x 1

Ø10 x 1

Windows diameter, mm

20

20

Window material

UV (IR) quartz

UV (IR) quartz

Clear diameter for transmission, mm

7

7

Angle of acceptance for reflectivity measurements, degrees

120

130

Minimal working distance for microscopy, mm

7

6

Cryostat height, mm

55

55

Cryostat diameter, mm

100

100

Length of cooling agent transfer tubes, mm

250

250

Temperature range, K

7 – 273

82 – 350

Temperature stability 7 – 15 (He), K*

±0.4

 

Temperature stability 15 – 82 (He), K

±0.3

 

Temperature stability 80 – 273 (He), K

±0.2

 

Temperature stability 82 – 350 (N2), K

 

±0.3

Cool down time (to 4.2 K or to 80 K), min

30

20

Sample change time, min

30

30

He consumption at 7 K, l/h

1

 

N2 consumption at 82 K, l/h

 

1

He dewar (recommended), l

10 – 40

 

N2 dewar (recommended), l

 

35

Cryostat weight, kg

4

4

* – Temperature regulation system tSTAT310xc (microCRYO102HE) and tSTAT335x (microCRYO102N2) is strongly recommended.

Complete system

  1. microCRYO102 cryostat.

  2. Temperature controller tSTAT310xc with Manostat (microCRYO102HE) or temperature controller tSTAT335x without Manostat (microCRYO102N2).

  3. Vacuum isolated transfer line.

  4. Storage dewar.

Optionally

  1. Optimization of windows for optical experiments.

  2. Maximal sample dimensions, Dia 30 x 8 mm.

  3. Windows material

  • Sapphire.

  • A2B6 (ZnSe, ZnS, CdTe) and other materials on request.

  1. Maximum aperture up to 130°.

  2. Clear diameter for transmission up to 20 mm.

  3. Windows depolarization ratio less than 1%.

  4. 0.2 T magnets on the cryostat top for magneto-optical measurements.

Additional equipment

  1. XY sample positioning module inside the cryostat.

  2. Mechanical stress application module.

  3. Multi-pin electric connector.

  4. Storage He or N2 dewar.

  5. Dewar transport platform.

  6. Water cooled 0.2 T solenoid.

Key benefits

  • Small working distance.

  • Moderate consumption of liquid He (N2).

  • Easy use in commercial optic and microscopy set-up’s.

 
Postal address: RTI Ltd., Institutskaya str. b.2, 142432 Chernogolovka, Moscow region, Russian Federation
Phone: +7 800 100-29-70