Selective excitation of the npσ¹Σ_u⁺ and npπ¹Π_u to E,F ¹Σ_g⁺ emission systems in molecular hydrogen using synchrotron radiation

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• 作者：Á ; lvarez Ruiz ; J. ; Erman ; P. ; Kivimä ; ki ; A. ; Melero Garcia ; E. ; Rachlew ; E. ; Stankiewicz ; M.
• 刊名：Chemical Physics Letters
• 出版年：2004
• 出版时间：April 11, 2004
• 年：2004
• 卷：388
• 期：1-3
• 页码：31-35
• 全文大小：251 K

文摘

The npσ¹Σ_u⁺ and npπ¹Π_u states in H₂ have been selectively excited using monoenergetic synchrotron light in the range 14.4–15.5 eV and the subsequent emission was observed using a grating spectrometer. In total 22 well separated bands of the npσ¹Σ_u⁺ and npπ¹Π_u to E,F ¹Σ_g⁺ systems (n=3–7) were observed and rotationally analysed. The intensities of the P and R branches relative to the Q branch vary strongly in the npπ to EF bands confirming the existence of predissociations of a large number of npπ¹Π⁺ levels. Energy levels of the E,F ¹Σ_g⁺ state (v_E,F