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catalog index
diode laser spectroscopy
earth's field nmr
earth's field nmr gradient/field coil system
fabry-perot cavity
faraday rotation
hall effect
magnetic force
magnetic torque
magnetic torque's magnetic force balance
modern interferometry
muon physics
optical pumping
power/audio amplifier
pulsed nmr
quantum analogs
signal processor
/lock-in amplifier
sonoluminescence
torsional oscillator
two slit interference, one photon at a time
two slit's cricket
individual parts
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Optical Pumping
introduction | the instrument | experiments
| specifications| accessories | prices
Absorption Cell:
- Natural Rb with 30 Torr Neon
Lamp:
- RF Discharge of Isotopically Enriched Rb (63% Rb87)
Oven:
- PID Controller,
- Range; Ambient – 100 °C
- Res. 0.1°C, Reg. 0.05 °C/hr
Optics:
- 50 mm Diameter
- Interference Filter
- 2 Linear Polarizers and 1/4
 Retarder Plate in 360° Rotation Mounts
- 2 Plano-Convex Lenses, f = 50 mm
Photodiode Detector:
- Low-noise Current-to-Voltage Preamplifier
- Bandwidth 0.1 Hz - 1 kHz
- Noise: 20 µ Vp-p with Rgain = 1 M Ohm
Magnetic Field of Precision Helmholtz Coils:
- Vertical:
0 – 1.4 x 10-4 T,
Stability, 2 x 10-7 T/hr,
- Horizontal:
8 x 10-4 T (internal supply)
22 x 10-4 T (external supply)
Stability, 4 x 10-7 T/hr
Homogeneity > 2 x 10-4 over cell
- Horizontal
Sweep: 0 – 10-4 T,
Time 1, 2, 5 . . . 1,000s
Stability 2 x 10-7 T/hr
External Modulation Input
RF Amplifier:
- 10 kHz –
100 MHz
Input Impedance = 50 Ohms.
Output 150 mW, 100 mA Max.
Detector Amplifier:
- Amplifier: Gain, 1, 2, 5,. . . 1000
- Low-Pass, 12 db/oct
- Time Constants, 1ms, 10 ms . . . 3s
Dimensions:
- Electronics 13’ x 15” x 10”
- Exp. Table 28” x 15” x 16”
Warranty:
- Two Years, parts and labor
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