diff --git a/xray/utils.py b/xray/utils.py
index 1fcf2b6..24d6b72 100644
--- a/xray/utils.py
+++ b/xray/utils.py
@@ -30,11 +30,13 @@ def getEdfFiles(folder,**kw):
   return getFiles(folder,basename="*.edf*",**kw)
 
 def getDelayFromString(string) :
-  match = _timeInStr_regex_regex.search(string)
+  match = _timeInStr_regex.search(string)
   return match and match.group(1) or None
 
 _time_regex = re.compile("(-?\d+\.?\d*)((?:s|fs|ms|ns|ps|us)?)")
+
 def strToTime(delay) :
+  if isinstance(delay,bytes): delay = delay.decode('ascii')
   _time2value = dict( fs = 1e-15, ps = 1e-12, ns = 1e-9, us = 1e-6, ms = 1e-3, s = 1)
 
   match = _time_regex.search(delay)
@@ -309,7 +311,7 @@ def chargeToPhoton(chargeOrCurrent,material="Si",thickness=100e-6,energy=10,e_ho
      
   """
   # calculate absortption
-  A = 1-transmission(material=material,energy=energy)
+  A = 1-transmission(material=material,energy=energy,thickness=thickness)
   chargeOrCurrent = chargeOrCurrent/A
 
   e_hole_pair_energy = 3.6e-3