This paper reports the analysis of the X-ray spectra of the Galactic diffuse X-ray emission ( GDXE ) in the Suzaku archive .
The fluxes of the Fe \emissiontype I K \alpha ( 6.4 keV ) , Fe \emissiontype XXV He \alpha ( 6.7 keV ) and Fe \emissiontype XXVI Ly \alpha ( 6.97 keV ) lines are separately determined .
From the latitude distributions , we confirm that the GDXE is decomposed into the Galactic center ( GCXE ) , the Galactic bulge ( GBXE ) and the Galactic ridge ( GRXE ) X-ray emissions .
The scale heights ( SHs ) of the Fe \emissiontype XXV He \alpha line of the GCXE , GBXE and GRXE are determined to be \sim 40 , \sim 310 and \sim 140 pc , while those of the Fe \emissiontype I K \alpha line are \sim 30 , \sim 160 and \sim 70 pc , respectively .
The mean equivalent widths ( EWs ) of the sum of the Fe \emissiontype XXV He \alpha and Fe \emissiontype XXVI Ly \alpha lines are \sim 750 eV , \sim 600 eV and \sim 550 eV , while those of the Fe \emissiontype I K \alpha line are \sim 150 eV , \sim 60 eV and \sim 100 eV for the GCXE , GBXE and GRXE , respectively .
The origin of the GBXE , GRXE and GCXE is separately discussed based on the new results of the SHs and EWs , in comparison with those of the Cataclysmic Variables ( CVs ) , Active Binaries ( ABs ) and Coronal Active stars ( CAs ) .