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