medium-pressure mercury lamp

Also contains definition of: medium-pressure mercury arc
https://doi.org/10.1351/goldbook.M03816
Non-@C01130@ source containing mercury vapour at pressures ranging from $$50$$ to several hundred $$\mathrm{kPa}$$ ($$1\ \text{atm} = 101.325\ \text{kPa}$$). Emits mostly from $$200$$ to $$1000\ \text{nm}$$ with the most intense lines approximately at $$218$$, $$248$$, $$254$$, $$266$$, $$280$$, $$289$$, $$297$$, $$303$$, $$313$$, $$334$$, $$366$$, $$406$$, $$408$$, $$436$$, $$546$$ and $$578\ \text{nm}$$.
Source:
PAC, 2007, 79, 293. (Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)) on page 369 [Terms] [Paper]