LADP-3 Microwave Electron Spin Resonance Apparatus

Oscilloscope not provided

Product Detail

Experiments

1. Study and acknowledge electron spin resonance phenomenon.

2. Measure lande’s g-factor of dpph sample.

3. Learn how to use microwave devices in epr system.

4. Understand standing wave by changing resonant cavity length and determine waveguide wavelength.

5. Measure standing wave field distribution in resonant cavity and determine waveguide wavelength.

Specifications

Microwave system
Short-circuit piston	Adjustment range: 30 mm
Sample	Dpph powder in tube (dimensions: Φ2×6 mm)
Microwave frequency meter	Measurement range: 8.6 ghz ~ 9.6 ghz
Waveguide dimensions	Inner: 22.86 mm × 10.16 mm (eia: Wr90 or iec: R100)
Electromagnet
Input voltage and accuracy	Max: ≥ 20 v, 1% ± 1 digit
Input current range and accuracy	0 ~ 2.5 a, 1% ± 1 digit
Stability	≤ 1×10^-3+5 ma
Strength of magnetic field	0 ~ 450 mt
Sweep field
Output voltage	≥ 6 v
Output current range	0.2 ~ 0.7 a
Phase adjustment range	≥ 180°
Scan output	Bnc connector, saw-tooth wave output 1~10 v
Solid state microwave signal source
Frequency	8.6 ~ 9.6 ghz
Frequency drift	≤ ± 5×10^-4/15 min
Working voltage	~ 12 vdc
Output power	> 20 mw under equal amplitude mode
Operation mode & parameters	Equal amplitude
	Internal square-wave modulationRepetition frequency: 1000 hz Accuracy: ± 15% Skewness: < ± 20％

Waveguide dimensions	Inner: 22.86 mm × 10.16 mm (eia: Wr90 or iec: R100)