 Xenon is used as a " starter gas " in high pressure sodium lamps . It has the lowest thermal conductivity and lowest ionization potential of all the non @-@ radioactive noble gases . As a noble gas , it does not interfere with the chemical reactions occurring in the operating lamp . The low thermal conductivity minimizes thermal losses in the lamp while in the operating state , and the low ionization potential causes the breakdown voltage of the gas to be relatively low in the cold state , which allows the lamp to be more easily started . 
 Xenon is used as a " starter gas " in high pressure sodium lamps . It <a href='got' title='1'><mark>has</mark></a> the lowest thermal conductivity and lowest ionization potential of all the non @-@ radioactive noble gases . As a noble gas , it <a href='uninflect' title='2'><mark>does</mark></a> not interfere with <a href='None' title='3'><mark>the</mark></a>chemical <a href='negative_concord' title='4'><mark>reactions</mark></a> occurring in the operating lamp . The low thermal conductivity <a href='uninflect' title='5'><mark>minimizes</mark></a> thermal losses in the lamp while in the operating state , and the low ionization potential <a href='uninflect' title='6'><mark>causes</mark></a> the breakdown voltage of the gas to be relatively low in the cold state , which <a href='uninflect' title='7'><mark>allows</mark></a> the lamp to be more easily started . 
Xenon is used as a " starter gas " in high pressure sodium lamps . It got da lowest thermal conductivity and lowest ionization potential of all the non @-@ radioactive noble gases . As a noble gas , it do not interfere with chemical no reactions occurring in the operating lamp . The low thermal conductivity minimize thermal losses in the lamp while in the operating state , and the low ionization potential cause the breakdown voltage of the gas to be relatively low in the cold state , which allow the lamp to be more easily started .