 In the heads of some safety matches , antimony ( III ) sulfide is used . Antimony @-@ 124 is used together with beryllium in neutron sources ; the gamma rays emitted by antimony @-@ 124 initiate the photodisintegration of beryllium . The emitted neutrons have an average energy of 24 keV . Antimony sulfides have been shown to help stabilize the friction coefficient in automotive brake pad materials . 
 In the heads of some safety matches , antimony ( III ) sulfide is used . Antimony @-@ 124 is used together with beryllium in neutron sources ; the gamma rays emitted by antimony @-@ 124 initiate the photodisintegration of beryllium . The emitted neutrons <a href='got' title='1'><mark>have</mark></a> an average energy of 24 keV . Antimony sulfides <a href='been_done' title='2'><mark>have</mark></a> been shown to help stabilize the friction coefficient in automotive brake pad materials . 
In the heads of sum safety matches , antimony ( III ) sulfide is used . Antimony @-@ 124 is used together with beryllium in neutron sources ; da gamma rays emitted by antimony @-@ 124 initiate tdaphotodisintegration of beryllium . Thdamitted neutrons got an average energy of 24 keV . Antimony sulfides done been shown to help stabilize the friction coefficient in automotive brake pad materials .