Stability and Performance Characteristics of a Digital Positron Lifetime Spectrometer

• Authors: R. Aavikko , K. Rytsölä , J. Nissilä , K. Saarinen
• Languages of publication: EN

Abstracts

EN

We summarize the setup and performance tests of a digital positron lifetime spectrometer presently in routine use at HUT/Laboratory of Physics. The performance of the spectrometer is found to be equal to or better than that of an analog spectrometer with similar detectors. We present also results on measuring the stability of the system, which is found to be similar to that of analog spectrometers: variation in the time-zero of the spectrometer is found to be ≈10 ps/week. We suggest that the remaining instabilities of the spectrometers originate primarily from the detectors.

Keywords

EN

06.60.Jn; 07.05.Hd; 78.70.Bj; 07.85.Nc

Discipline

• 78.70.Bj: Positron annihilation(for positron states, see 71.60.+z in electronic structure of bulk materials; for positronium chemistry, see 82.30.Gg in physical chemistry and chemical physics)
• 07.05.Hd: Data acquisition: hardware and software
• 06.60.Jn: High-speed techniques (microsecond to femtosecond)
• 07.85.Nc: X-ray and γ-ray spectrometers

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2005
• Volume: 107
• Issue: 4
• Pages: 592-597

Dates

published

2005-04

received

2004-09-20

Contributors

author

R. Aavikko

• Laboratory of Physics, Helsinki University of Technology, P.O. Box 1100, 02015 HUT, Espoo, Helsinki, Finland

author

K. Rytsölä

• Laboratory of Physics, Helsinki University of Technology, P.O. Box 1100, 02015 HUT, Espoo, Helsinki, Finland

author

J. Nissilä

• Laboratory of Physics, Helsinki University of Technology, P.O. Box 1100, 02015 HUT, Espoo, Helsinki, Finland

author

K. Saarinen

• Laboratory of Physics, Helsinki University of Technology, P.O. Box 1100, 02015 HUT, Espoo, Helsinki, Finland

References

• 1. K. Rytsola, J. Nissila, K. Kokkonen, A. Laakso, R. Aavikko, K. Saarinen, Appl. Surf. Sci., 194, 260, 2002
• 2. H. Saito, Y. Nagashima, T. Kurihara, T. Hyodo, Nucl. Instrum. Methods Phys. Res. A, 487, 612, 2002
• 3. J. Nissila, K. Rytsola, R. Aavikko, A. Laakso, K. Saarinen, P. Hautojarvi, Nucl. Instrum. Methods Phys. Res. A, accepted for publication
• 4. R. Aavikko, K. Rytsola, J. Nissila, Mater. Sci. Forum, 445-446, 462, 2004
• 5. R. Krause-Rehberg, H.S. Leipner, Positron Annihilation in Semiconductors, Springer, Heidelberg 1999
• 6. A. Rothenberg, private communication, Acqiris, 2004
• 7. J. Nissila, M. Karppinen, K. Rytsola, J. Oila, K. Saarinen, P. Hautojarvi, Nucl. Instrum. Methods Phys. Res. A, 466, 527, 2001
• 8. I.K. MacKenzie, in: Proc. Int. School of Physics 'Enrico Fermi', Course LXXXIII, Varenna (Italy) 1981, Eds. W. Brandt, A. Dupasquier, North-Holland, Amsterdam 1983, p. 220
• 9. T. Kohama, Temperature Dependence of Propagation Time in Andrew's Coaxial Cable, Technical report, Phoenix group, Hiroshima University, 1996

Identifiers

DOI

10.12693/APhysPolA.107.592