def minEdge(elm): """Example: minEdge("Ag") Returns the lowest energy edge which is likely to be visible in an EDS detector for the specified element""" elm = dtsa2.element(elm) if elm.getAtomicNumber() >= MinMElement: res = epq.AtomicShell(elm, epq.AtomicShell.MV) elif elm.getAtomicNumber() >= MinLElement: res = epq.AtomicShell(elm, epq.AtomicShell.LIII) else: res = epq.AtomicShell(elm, epq.AtomicShell.K) return res
def maxEdge(elm, e0, over=1.5): """Example: maxEdge("Ag", 20.0, 1.5) Returns the highest energy edge which is excited with the overvoltage specified (1.5) for the specified beam energy (20.0).""" elm = dtsa2.element(elm) e0 = epq.ToSI.keV(e0) res = None if elm.getAtomicNumber() > MinMElement: sh = epq.AtomicShell.MV if epq.AtomicShell.getEdgeEnergy(elm, sh) * over <= e0: res = epq.AtomicShell(elm, sh) if elm.getAtomicNumber() > MinLElement: sh = epq.AtomicShell.LIII if epq.AtomicShell.getEdgeEnergy(elm, sh) * over <= e0: res = epq.AtomicShell(elm, sh) sh = epq.AtomicShell.K if epq.AtomicShell.getEdgeEnergy(elm, sh) * over <= e0: res = epq.AtomicShell(elm, sh) return res