º£²ó¤ÏÄ̾ï¤ÎÄ´À°Êó¹ð¤È¤Ï¾¯¤·½çÈÖ¤òÊѤ¨¤¿¼Â¸³¤ò¤·¤Æ¤ß¤ë¡£
º¸¤Ï¥¸¥ã¥ó¥¯°·¤¤¤Ç¤ä¤Ã¤Æ¤¤¿1980ǯÂåÁ°È¾¤ÎNo.146¤Ç14C-F¥Ë¥ÖÉÕ¤¡£¼Â¤Ï¿¬¼´¤¬²ó¤é¤º°ì¼¡¤ÏÉôÉʤ«¤Ê¤¡¡Á¤È¥¬¥Ã¥«¥ê¤·¤Æ¤¤¤¿¤Î¤À¤¬¡¢¥¢¥¹¥³¥ë¥Ó¥ó»À¤òÇ®Åò¤ËÍϤ«¤·¤¿Íϱդ˿»¤±¤Æ5ʬ¤Û¤É·ã¤·¤¯³ÉÙ¤·¡¢¤½¤Î¸å¤â²¿ÅÙ¤«¿¬¼´¤òÇ®Åò¤Ë¿»¤±¤¿¤ê¡¢¥Ò¡¼¥È¥¬¥ó¤Çßդ俤ꤷ¤¿¤È¤³¤í¡¢²¿¤È¤«¿¬¼´¤¬¤Þ¤ï¤Ã¤¿¡£
¤³¤Î¹Ô°Ù¤ò¤¹¤ë¾ì¹ç¤Ï¡¢ÌµÍý¤Ï¶Øʪ¡£ÎϤ¤¤Ã¤Ñ¤¤¤Þ¤ï¤¹¤È¿¬¼´¤«¤éÆ⦤˿¤Ó¤¿ÍæÀû¼´¤¬¥Í¥¸ÀÚ¤ì¤Æ¤·¤Þ¤¦¡£¡Ú¾¯¤·¤ä¤Ã¤Æ¤Ïßդꡢ¾¯¤·¤ä¤Ã¤Æ¤Ï¤ªÅò¤Ë¿»¤±¡¦¡¦¡¦¤òº¬µ¤¤è¤¯Â³¤±¤Æ¤¤¤ì¤Ð¡¢¤¤¤Ä¤«¥Ô¥ç¥³¤Ã¤ÈDZ¤ì¤ë»þ¤¬Íè¤ë¡¢¤½¤ì¤Þ¤ÇÂԤĤó¤Ç¤¹¤è¡Û¤È¤Ï¡¢¤½¤ÎÀΡ¢½¤Íý¤Îã¿Í¤«¤é¤¦¤«¤¬¤Ã¤¿¥¢¥É¥Ð¥¤¥¹¤Ç¤¢¤ë¡£ºÇ¶á¤Ï¤è¤¦¤ä¤¯¤½¤Î¶ÃϤˤʤä¿¡£
¤½¤ì¤Ë¤·¤Æ¤â¹ó¤¤¤È¤¤¤¦¤«¡¢¤¹¤Ð¤é¤·¤¤¤È¤¤¤¦¤«¡¢¸«»ö¤Ê¤Þ¤Ç¤Î¥¨¥Ü¾Æ¤±¡£¶õµ¤¤È¿¨¤ì¤ëÉôʬ¤Î¤ß¤¬åºÎï¤Ë¾Æ¤±¤Æ¤¤¤ë¡£È¿ÂФ˥ڥóÀè΢¦¤¬¤Û¤È¤ó¤É¾Æ¤±¤Æ¤¤¤Ê¤¤¡£¤³¤ì¤Ï¾ï¤Ë¥Ú¥óÀè¤Î΢¤¬¶õµ¤¤Ë¿¨¤ì¤Ê¤¤¾õÂ֤ˤ¢¤Ã¤¿»ö¤ò°ÕÌ£¤·¤Æ¤¤¤ë¤Î¤À¤í¤¦¤¬¡¢¤É¤¦¤ä¤Ã¤¿¤é¤½¤¦¤Ê¤ë¤Î¤«¤ÏÁÛÁü¤â¤Ä¤«¤Ê¤¤¡ª¡¡¥Ú¥ó¿Ä¤ÈÀܤ·¤Æ¤¤¤Ê¤¤Éôʬ¤Ï¤¢¤ëÄøÅÙ¥¨¥Ü¾Æ¤±¡Ê±ïÀè¤Î¥¨¥é¤ÎÊý¡Ë¤·¤Æ¤¤¤ë¤è¤¦¤À¤¬¡¦¡¦¡¦
¤¤¤º¤ì¤Ë¤»¤è¡¢¤â¤Î¤¹¤´¤¯ÃÆÎϤ¬¤¢¤ë¥Ú¥óÀ衪¤¿¤À½À¤é¤«¤¤¤Î¤Ç¤Ï¤Ê¤¯¡¢½ñ¤Ì£¤Ï½À¤é¤«¤¤¤¬È¿È¯ÎϤâÁêÅö¶¯¤¤¡£½À¤¤¡Ê¤ä¤ï¤¤¡Ë¥Ë¥Ö¤Ç¤Ï¤Ê¤¤¡£ÄȤÇÃÃÏ£¤µ¤ì¤¿¤è¤¦¤Ê¤¹¤Ð¤é¤·¤¤È¿È¯ÎϤ¸¤ã¡ª
¤³¤ì¤òåºÎï¤ËÀ¶Áݤ·¡¢¥¹¥ê¥Ã¥È¤Î´ó¤ê¤ò¾¯¤·¼å¤á¤¿¡£¤³¤ì¤Ç¤¢¤ëÄøÅ٤Υ¤¥ó¥¯¤Ï½Ð¤Æ¤¯¤ë¤Ç¤¢¤í¤¦¡£¤³¤Î½èÃÖ¤ò»Ü¤¹Á°¤Ï¡¢É®°µ¤ò¤«¤±¤Ê¤È¥¤¥ó¥¯¤Ï°ìÀڽФÆÍè¤Ê¤«¤Ã¤¿¡£
¤¤¤Ä¤â¤Î¤³¤È¤Ê¤¬¤é¡¢¥Ú¥óÀè¤Î¥¹¥¥ã¥Ê¡¼²èÁü¤ÏÈþ¤·¤¤¡ª¤³¤Î¥Ú¥óÀè¤ÎĦ¤ê¤Ï¥ì¡¼¥¶¡¼Ä¦¹ï¤Ç¤Ï¤Ê¤¯¥×¥ì¥¹²Ã¹©¡£
½¾¤Ã¤ÆÁ´¤ÆƱ¤¸ÌÏÍͤΤϤº¤Ê¤Î¤À¤¬¡¢ÀÚ¤ê³ä¤ê¤ÏÌÏÍͤÎÃæ±û¤Ë¤ÏÍè¤Æ¤¤¤Ê¤¤¤¬¡¢¥Ï¡¼¥È·ê¤È¥Ú¥ó¥Ý¥¤¥ó¥È¤ÎÃæ±ûÉô¤Ï³°¤·¤Æ¤¤¤Ê¤¤¡£
ÀۼԤϤ³¤Î14C¤Î»þÂå¤Î¥Ú¥óÀè¤è¤ê¤â¡¢È¿È¯ÎϤ¬¾¯¤Ê¤¤14K¤Î»þÂå¤Î¥Ú¥óÀè¤ÎÊý¤¬¹¥¤¤À¡£¤³¤Î»þÂå¤Î14C¤Î¥Ú¥óÀè¤ÏÇö¤¤¤Î¤Ç¡¢¼ó¼´¤Ë¤·¤Ã¤«¤ê¤È²¡¤·¹þ¤ó¤Ç¤âº¸±¦¤«¤é¤ÎÎϤ¬²Ã¤ï¤ì¤Ð¥Ú¥óÀ褬¤¹¤°¤Ë¥º¥ì¤Æ¤·¤Þ¤¦¡£
½¾¤Ã¤ÆÄ㤤ɮ°µ¤Ç¤æ¤Ã¤¯¤ê¤È½ñ¤¯¿Í¸þ¤¤Ç¤¢¤í¤¦¡£¤É¤¦¤·¤Æ¤âÉ®°µ¤ò¤«¤±¤ÆÁá½ñ¤¤·¤¿¤¤¤Î¤Ç¤¢¤ì¤Ð¡¢¥Ú¥óÀè¤È¥Ú¥ó¿Ä¤òÄê°ÌÃÖ¤«¤é180ÅÙ¥º¥é¤·¤Æ¼ó¼´¤Ë²¡¤·¹þ¤á¤ÐÎɤ¤¡£¾¯¤·¥³¥Ä¤¬¤¤¤ë¤¬¤Ê¡£
¥¥ã¥Ã¥×¤â¥¯¥ê¥Ã¥×¤â½ý¤ä¥µ¥Ó¤¬¤¢¤Ã¤¿¤Î¤Çʬ²ò¤·¤Æ¥µ¥ó¥¨¡¼¥Ñ¡¼¥ë¤òÉÛ¤ËÉÕ¤±¤Æ¥´¥·¥´¥·¤È»¤¤Ã¤¿¤é¸«°ã¤¨¤ë¤è¤¦¤ËåºÎï¤Ë¤Ê¤Ã¤¿¡£
¶â°Éôʬ¤òË᤯¤È¸À¤¦¤³¤È¤ÏÅÕ¶â¤òÍî¤È¤·¤Æ¤¤¤ë»ö¤Ë¤Ê¤ë¤Î¤À¤¬¡¢¾®±ø¤¤Åն⤬»Ä¤Ã¤Æ¤¤¤ë¤è¤ê¡¢Á´¤ÆÅÕ¶â¤òÍî¤È¤·¤¿Êý¤¬¾®åºÎï¤À¡£
¥¥ã¥Ã¥×¥ê¥ó¥°¤Ï¥Þ¥¹¥¥ó¥°¤·¡¢¥¯¥ê¥Ã¥×¤Ï³°¤·¤Æºî¶ÈÀ¤òÎɤ¯¤·¤Æ¤«¤é¡¢¥´¥·¥´¥·»¤¤ë¤Î¤¸¤ã¤è¡£
¤Ê¤ò»¤¤ëÉۤˤϥ»¥Ö¥ó¡¦¥¤¥ì¥Ö¥ó¤Î5Ëç198±ß¤Î»¨¶Ò¤ò»È¤Ã¤Æ¤¤¤ë¤¬¤³¤ì¤Ç½½Ê¬¡£¤³¤ì¤¯¤é¤¤¹Ó¤¤ÉÛ¤ÎÊý¤¬Ã»»þ´Ö¤Ç½ýÍî¤È¤·¤¬½ÐÍè¤ë¤è¤¦¤Êµ¤¤¬¤¹¤ë¡£
¡¡¡¡¡¡
¤Û¤È¤ó¤É»à¤Ë¤«¤±¤Æ¤¤¤¿¥Ô¥¹¥È¥ó¤À¤¬¡¢º¸Â¦²èÁü¤Î¤è¤¦¤Ëʬ²ò¤·¤Æ¤«¤é¡¢¸Ä¡¹¤ÎÉôÉʤòÀ¶Áݤ·¡¢¥°¥ê¡¼¥¹¥¢¥Ã¥×¤·¤Æ¤«¤éºÆÅÙÁȤßΩ¤Æ¤ë¤È±¦Â¦²èÁü¤Î¾õÂ֤ˤʤ롣
¤³¤Î¾õÂ֤ǡ¢¥Ô¥¹¥È¥ó¤ò±¦¤ËÎϤ¤¤Ã¤Ñ¤¤Ç±¤Ã¤Æ¼ê¤òÊü¤·¤¿»þ¡¢¥«¥¿¥«¥¿¤ÈÍ·¤Ó¤¬½ÐÍè¤Ê¤¤¤è¤¦¡¢¤«¤Ä¡¢¥Ô¥¹¥È¥ó¤¬½ÐÍè¤ë¤À¤±¸å¤í¤Þ¤ÇÍè¤ë¤è¤¦¤Ê°ÌÃÖ¤ò¸«¤Ä¤±¤ë¤Î¤¬Æñ¤·¤¤¡£ÀۼԤϴ·¤ì¤Æ¤¤¤ë¤Î¤Ç¡¢¤Û¤È¤ó¤É¤Î¾ì¹ç¡¢1²óÌܤ«2²óÌܤÇÀµ¤·¤¤°ÌÃÖ¤ò¸«¤Ä¤±¤ë¤³¤È¤¬½ÐÍè¤ë¡£
¤³¤Á¤é¤Îƹ¼´¤âĶ±ø¤ì¤Æ¤¤¤¿¡£¥Ô¥¹¥È¥óµ¡¹½¤òÖȤ᤿¤Þ¤Þ¤À¤È²¿ÅÙµÛÆþ¤òÀÚ¤êÊÖ¤·¤Æ¤â¡¢¥É¥¹ÀĤ¤¡©±ÕÂΤ¬¥É¥¯¥É¥¯¤È½Ð¤Æ¤¯¤ë¤Î¤Ç¡¢¿¬¼´¤ò³°¤·¡¢¥Ú¥óÀè¤ò¤¿¤¿¤½Ð¤·¤Æ¤«¤éÀ¶Áݤ·¤¿¡£
Ç®ÅòĶ²»ÇÈÀö¾ôµ¡¤ÇÀö¤Ã¤Æ¤â´°Á´¤ËåºÎï¤Ë¤Ï¤Ê¤é¤Ê¤¤¤Î¤Ç¡¢ºÇ¸å¤ÏÌÊËÀ¤ÎÀè¤ËĶÅŲò¿å¡¢¥¢¥¹¥³¥ë¥Ó¥ó»À¡¢¥í¥Ã¥È¥ê¥ó¥°Àö¾ô±Õ¡¦¡¦¡¦¤Ê¤É¤ò´Þ¤Þ¤»¤Æ¥´¥·¥´¥·¤ÈÀ¶Áݤ¹¤ë¡£
¤½¤Î¸å¡¢Æ¹ÂΤò¥µ¥ó¥¨¡¼¥Ñ¡¼¥ë¤Ç¥´¥·¥´¥·¤ÈË᤾夲¤ë¡£Æä˥¤¥ó¥¯Áë¤Î¤¢¤¿¤ê¤È¡¢¿¬¼´Â¦¤«¤é1ÑÄøÅÙ¤ÎÉôʬ¤Ë»¤¤ê½ý¤¬½¸Ã椷¤Æ¤¤¤ë¤Î¤Çº¬µ¤¤è¤¯»¤¤ë¤Î¤¸¤ã¤è¡£
¤³¤Á¤é¤Ï¥Ú¥ó¿Ä¡£¤³¤ì¤Ïɬ¤º¿¬¼´Â¦¤«¤é¤¿¤¿¤½Ð¤¹¤³¤È¡£Á°¤«¤é¥Ú¥óÀè¤È¤¤¤Ã¤·¤ç¤Ë°ú¤È´¤¯¤Ò¤È¤â¤¤¤ë¤¬¡¢¤½¤Î¾ì¹ç¡¢¤è¤Û¤É¼ó¼´¤¬´Ë¤¯¤Ê¤¤¤È¥Ú¥ó¿Ä¤Î¥Õ¥£¥ó¤òÀޤäƤ·¤Þ¤¦³ÎΨ¤¬¹â¤¤¡£
°ÊÁ°¤Ï¥Õ¥£¥ó¤òÀޤäƤâ¥Ú¥ó¿Ä¤òÉôÉʤȤ·¤ÆÂåÍýŹ¤«¤é¼è¤ê´ó¤»¤é¤ì¤¿¤¬¡¢º£¤Ç¤Ï¤¢¤êÆÀ¤Ê¤¤ÏᣤÀ¤«¤é¤³¤½ÉôÉʤÎÆ󼡥ޡ¼¥±¥Ã¥È¤Ï°ÕÌ£¤¬¤¢¤ë¡£
¤â¤Ã¤È¤â³¤³°¤Ç¤Ï¡¢¤½¤ì¤ËÌ£¤ò¤·¤á¤¿¤Î¤«¡¢¥¸¥ã¥ó¥¯ÉʤÎËÜÂΤè¤ê¤â¡¢¤½¤ì¤«¤é¼è¤ê½Ð¤·¤¿ÉôÉʤÎÊý¤¬¹â²Á¤Ê¾ì¹ç¤â¿¡¹¤¢¤ë¡£
º£²ó¡¢¥¸¥ã¥ó¥¯¤òʬ²ò¤·¤Æ¡¢À¶Áݤ·¤Æ¤ß¤¿¤¬¡¢¹©¿ô¤ò¹Í¤¨¤ì¤Ð¡¢¤¢¤Ê¤¬¤Á¤Ü¤Ã¤Æ¤¤¤ë¡¦¡¦¡¦¤È¤Ï¸À¤¨¤Ê¤¤¤À¤í¤¦¡£