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Element Neptunium Np 93  •  Periodic table  •  Listview  •  References
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Properties
IonizationPotential: 50536.3 cm-1   (6.2657 eV)
Series: Actinide 
MeltingPoint: 644. °C
BoilingPoint: 3 4.0 10 °C
AtomicWeight: 237 g/mol
Yields: CERN TRIUMF
Maximum Efficiency: 0.3%

Ionization Scheme (1) Np_398.8_829.1_746.4A     .pdf export test
Created by Sebastian Rothe
Level Energy
(cm-1)
Configuration Wavelength,
vac. (nm)
Energy
(cm-1)
Transition
strength (s-1)
Notes
E0      
      398.8 25075.22568
E1 25075.22568      
      829.12 12060.98031
E2 37136.20599      
      746.43 13397.104
IP 50536.3        
AI. 50533.30954      

Efficiency:

Used at: Mainz

Lasers used: Ti:sapphire

Reference: T. Gottwald and J. Lassen and Y. Liu and C. Mattolat and S. Raeder and K. Wendt, "Laser Resonance Ionization Spectroscopy of the Lanthanides Tb, Dy and Ho as Homologues to Actinides and Super Heavy Elements", AIP Conference Proceedings, 2009

Notes:

Updated: 20.02.2012 by Sebastian Rothe

Ionization Scheme (2) Np_380.7_794.9_812.8A     .pdf export test
Created by Sebastian Rothe
Level Energy
(cm-1)
Configuration Wavelength,
vac. (nm)
Energy
(cm-1)
Transition
strength (s-1)
Notes
E0 0      
      380.744 26264.37
E1 26264.37      
      794.939 12579.58
E2 38843.95      
      812.84 12302.544
IP 50536.3        
AI. 51146.5      

Efficiency: 0.3%

Used at: Mainz

Lasers used: Ti:sapphire

Reference: Sebastian Raeder, "Spurenanalyse von Aktiniden in der Umwelt mittels Resonanzionisations-Massenspektrometrie", , 2011

Notes: Efficiency measured with QMF in MABU

Updated: 21.02.2012 by Sebastian Rothe

Ionization Scheme (3) Np_398.8_<393N     .pdf export test
Created by Sebastian Rothe
Level Energy
(cm-1)
Configuration Wavelength,
vac. (nm)
Energy
(cm-1)
Transition
strength (s-1)
Notes
E0      
      398.8 25075.22568
E1 25075.22568      
     
E2      
      <393
IP 50536.3        

Efficiency:

Used at: Mainz

Lasers used: Ti:sapphire

Reference: T. Gottwald and J. Lassen and Y. Liu and C. Mattolat and S. Raeder and K. Wendt, "Laser Resonance Ionization Spectroscopy of the Lanthanides Tb, Dy and Ho as Homologues to Actinides and Super Heavy Elements", AIP Conference Proceedings, 2009

Notes:

Updated: 26.09.2012 by Sebastian Rothe


   23.10.2013 v0.06   •