Figure 1 | Scientific Reports

Figure 1

From: The polarization and the fundamental sensitivity of 39K (133Cs)-85Rb-4He hybrid optical pumping spin exchange relaxation free atomic magnetometers

Figure 1

The number density of 39K, 133Cs and 85Rb vary with temperature. Among 39K, 85Rb and 133Cs SERF magnetometers, there is a maximum temperature range for 39K to make the magnetometer in the SERF regime with the number density of 39K (black line in squares) satisfies the condition of the SERF regime, so the SERF magnetometer based on 39K is applicable to the working environment with the temperature varies drastically.

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