Text this

Number:

Provider:

CAPTCHA:

  ______    _____    ______      ___      _____   
 /_____//  |  ___|| |      \\   / _ \\   |__  //  
 `____ `   | ||__   |  --  //  | / \ ||    / //   
 /___//    | ||__   |  --  \\  | \_/ ||   / //__  
 `__ `     |_____|| |______//   \___//   /_____|| 
 /_//      `-----`  `------`    `---`    `-----`  
 `-`

Please enter what you see:

Text this: Optical properties in the visible luminescence of SiO<inf>2</inf>:B<inf>2</inf>O<inf>3</inf>:CaO:GdF<inf>3</inf>glass scintillators containing CeF<inf>3</inf>