CsBa 2 I 5 :Eu 2+ ,Sm 2+ —The First High‐Energy Resolution Black Scintillator for γ ‐Ray Spectroscopy

2019 ◽  
Vol 13 (9) ◽  
pp. 1900158 ◽  
Author(s):  
Weronika Wolszczak ◽  
Karl W. Krämer ◽  
Pieter Dorenbos
1975 ◽  
Vol 22 (1) ◽  
pp. 286-291 ◽  
Author(s):  
L. H. O'Neill ◽  
R. L. Ford ◽  
R. Hofstadter ◽  
E. B. Hughes ◽  
R. Kose ◽  
...  

2008 ◽  
Vol 45 (3) ◽  
pp. 43-49
Author(s):  
M. Shorohov ◽  
F. Muktepavela ◽  
J. Maniks

Surface Processing of TlBr Crystals for X- and γ-ray DetectorsA procedure for surface processing of TlBr crystals to be applied as X-and ?-ray detectors has been developed, providing removal of a mechanically destroyed surface layer by deep chemical etching, allowing the surfaces of good topography and thus the detectors with high energy resolution and stability to be obtained in a repeatable way. The surface quality and structural changes in the near-surface layer are estimated by the optical microscopy and indentation hardness technique.


1995 ◽  
Vol 66 (2) ◽  
pp. 2072-2074 ◽  
Author(s):  
M. Bissen ◽  
M. Fisher ◽  
G. Rogers ◽  
D. Eisert ◽  
K. Kleman ◽  
...  

2017 ◽  
Vol 139 (49) ◽  
pp. 18024-18033 ◽  
Author(s):  
Rebeca G. Castillo ◽  
Rahul Banerjee ◽  
Caleb J. Allpress ◽  
Gregory T. Rohde ◽  
Eckhard Bill ◽  
...  

2007 ◽  
Vol 127 (16) ◽  
pp. 164702 ◽  
Author(s):  
Alessandro Baraldi ◽  
Erik Vesselli ◽  
Laura Bianchettin ◽  
Giovanni Comelli ◽  
Silvano Lizzit ◽  
...  

2015 ◽  
Vol 112 (52) ◽  
pp. 15803-15808 ◽  
Author(s):  
Ofer Hirsch ◽  
Kristina O. Kvashnina ◽  
Li Luo ◽  
Martin J. Süess ◽  
Pieter Glatzel ◽  
...  

The lanthanum-based materials, due to their layered structure and f-electron configuration, are relevant for electrochemical application. Particularly, La2O2CO3 shows a prominent chemoresistive response to CO2. However, surprisingly less is known about its atomic and electronic structure and electrochemically significant sites and therefore, its structure–functions relationships have yet to be established. Here we determine the position of the different constituents within the unit cell of monoclinic La2O2CO3 and use this information to interpret in situ high-energy resolution fluorescence-detected (HERFD) X-ray absorption near-edge structure (XANES) and valence-to-core X-ray emission spectroscopy (vtc XES). Compared with La(OH)3 or previously known hexagonal La2O2CO3 structures, La in the monoclinic unit cell has a much lower number of neighboring oxygen atoms, which is manifested in the whiteline broadening in XANES spectra. Such a superior sensitivity to subtle changes is given by HERFD method, which is essential for in situ studying of the interaction with CO2. Here, we study La2O2CO3-based sensors in real operando conditions at 250 °C in the presence of oxygen and water vapors. We identify that the distribution of unoccupied La d-states and occupied O p- and La d-states changes during CO2 chemoresistive sensing of La2O2CO3. The correlation between these spectroscopic findings with electrical resistance measurements leads to a more comprehensive understanding of the selective adsorption at La site and may enable the design of new materials for CO2 electrochemical applications.


Sign in / Sign up

Export Citation Format

Share Document