The phosphor 9, wherein the element M is at least one kind of element selected from {HEAD ~ the group} consisting of {TAIL ~ Mg}, Ca, Sr, Ba, and Zn, the element 
The phosphor 9 , wherein the element M is at least one kind of element selected from { HEAD ~ the group } consisting of { TAIL ~ Mg } , Ca , Sr , Ba , and Zn , the element
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH