51.

E.V.D. van Loef, P. Dorenbos, C.W.E. van Eijk, K. Krämer, and H.U. Güdel
Optical and scintillation properties of pure and Ce³⁺ doped GdBr3
Optics Comm. 189 (2001) 297 – 304.

52.

E.V.D. van Loef, P. Dorenbos, C.W.E. van Eijk, K. Krämer, and H.U. Güdel
Scintillation properties of LaCl3 : Ce³⁺ crystals: Fast, Efficient and High energy resolution Scintillators
IEEE Trans. Nucl. Sci. 48 (2001) 341 – 345.

53.

C.W.E. van Eijk, P. Dorenbos, E.V.D. van Loef, K. Krämer, and H.U. Güdel
Energy resolution of some new-inorganic-scintillator gamma-ray detectors
Radiat. Meas. 33 (2001) 521 – 525.

54.

N. Cavadini, G. Heigold, W. Henggeler, A. Furrer, H.U. Güdel, K. Krämer,  and H. Mutka
Magnetic excitations in the Quantum Spin System TlCuCl3
Phys. Rev. B Rapid Com. 63 (2001) 172414, 1 – 4.

55.

D. Schaniel, P. Allenspach, A. Furrer, K.W. Krämer, and H.U. Güdel
Dimer splitting of Er³⁺ in Cs3Er2Br9
J. Alloys Comp. 323 – 324 (2001) 481 – 485.

56.

S. Heer, M. Wermuth, K. Krämer, and H.U. Güdel
Upconversion excitation of Cr3+ 2E emission in Y3Ga5O12 codoped with Cr³⁺ and Yb³⁺
Chem. Phys. Let. 334 (2001) 293 – 297.

57.

K.W. Krämer, R. Schenker, J. Hauser, Høgni Weihe, H.U. Güdel, and H.B. Bürgi
Crystal Structures of (Et4N)3M2F9 (M = V, Cr, Fe) determined by X-Ray Single-Crystal and
Powder Diffraction: A New Structure Type for A3M2X9 Compounds
Z. Anorg. Allg. Chem. 627 (2001) 2511 – 2516.

58.

E.V.D. van Loef, P. Dorenbos, C.W.E. van Eijk, K. Krämer, and H.U. Güdel
High-energy-resolution scintillator: Ce³⁺ activated LaBr3
Appl. Phys. Let. 79 (2001) 1573 – 1575.

59.

P. Dorenbos, C.W.E. van Eijk, H.U. Güdel, K. Krämer, and E.V.D. van Loef
Scintillator Crystals, Method for making same, Use thereof (Chloride)
International Patent WO 0160944.

60.

P. Dorenbos, C.W.E. van Eijk, H.U. Güdel, K. Krämer, and E.V.D. van Loef
Scintillator Crystals, Method for making same, Use thereof (Bromide)
International Patent WO 0160945.

61.

N. Cavadini, A. Furrer, H.U. Güdel, K. Krämer, H. Mutka, and A. Wildes
Polarization Study of the Singlet-Triplet Modes in a Quantum Spin System
Proc. ILL millennium symposium 2001, 145 – 146.

62.

O.S. Wenger, C. Wickleder, K.W. Krämer, and H.U. Güdel
Upconversion in a Divalent Rare Earth Ion: Optical Absorption and Luminescence Spectroscopy of Tm²⁺ Doped SrCl2
J. Lumin. 94 - 95 (2001) 101 - 105.

63.

S. Heer, M. Wermuth, K. Krämer, D. Ehrentraut, and H.U. Güdel
Upconversion excitation of sharp Cr³⁺ 2E emission in YGG and YAG codoped with Cr³⁺ and Yb³⁺
J. Lumin. 94 – 95 (2001) 337 - 341.