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TASSE

The IN20/TASSE is a Spin Echo (SE) option to be mounted on the IN20 thermal polarised neutron three-axis spectrometer (TAS). The purpose of this instrument is to measure excitations with a μeV resolution.

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TASSE - Experiments

  • 04/04/1995 - 25/04/1995: Test-108 (Zeyen)
  • 05/11/1996 - 18/11/1996: Test-198 (Zeyen)
  • 19/06/1997 - 10/07/1997: Test-231 (Zeyen)
  • 1995/1996: KDCO3
  • 19 Jun 1998 - 30 Jun 1998: Test: Zeyen
  • 12/08/1999 - 23/08/1999: Test-385 (Farhi)
  • 23 Aug - 6 sep 1999 : 6-01-193 : 4He roton linewidth (Fak/Farhi/Zeyen)
  • 27 May -5 Jun 2000 : 6-05-410 : Q-range study of CKN fragile glass quasi-elastic linewidth (Farago/Farhi) and Ge linewidth measurements (Kulda/Farhi/Zeyen)
  • 18 Oct 2000 : 6-01-209 : 4He maxon linewidth (Fak/Farhi/Zeyen)
  • 29/05/2001 - 12/06/2001: 4-01-530: Phonon line widths and energies in Ge and Si (Farhi/Hlinka/Kulda/Strauch)
  • 17/04/2002 - 02/05/2002: 4-01-530: Phonon anharmonicity and isotopic disorder effects in Ge (Cardona/Debernardi/Kulda/Farhi)
  • 25/02/2004 - 03/03/2004: Test-842: Remanence tests (none observed)
  • 01/03/2004 - 08/03/2004: Critical Huang scattering in PbMg1/3Nb2/3O3 in superparaelectric phase(Vakhrushev/Kiat/Farhi/Ivanov)
  • 04/11/2008 - 18/11/2008: 6-02-407 para-H2 on C (Gonzalez/Cabrillo/Farhi)


TASSE - Papers

  1. Optimal neutron Larmor precession magnets, C. Zeyen and P. Rem, IEEE Trans. Mag, 24 (1988) 1540.
  2. Construction of optimized superconducting spin precession magnets for neutron spectroscopy, H. ten Kate, R. Hartmann, C. Zeyen, B. ten Hakon, L. van de Klundert, IEEE Trans. Mag.  25 (1989) 1688.
  3. Optimization of Larmor precession magnets for neutron beams, C. Zeyen, ILL Tech Report 92ZE14T
  4. A neutron spin echo spectrometer with optimal field shape coils for neutron spin precession, T Takeda et al, Nucl. Inst. Meth. A 364 (1995) 186.
  5. Optimal neutron Larmor precession magnetic field shapes: application to neutron spin-echo three-axis spectrometry, C. Zeyen and P. Rem, Meas. Sci. Technol. 7 (1996) 782.
  6. Spin Echo Three Axis Spectrometer: A reality, C. Zeyen and K. Kakurai, J Neut. Research, 4 (1996) 241.
  7. Dynamics of the strain-mediated phase transition in KDCO3: A thermal neutron spin-echo study, K. Kakurai, T. Sakagushi, M. Nichi, C. Zeyen, S. Kashida, Y Yamada, Phys. Rev B 53 (1996) R5974 (with JAERI/JRR-3M/PONTA).
  8. Thermal neutron spin echo three-axis spectrometer with μeV resolution, C. Zeyen et al, Neutron News, 8 (1997) 7.
  9. Effect of isotope disorder on energies and lifetimes of phonons in germanium,
  10. Spin Echo three axis spectrometers for improved energy and momentum resolution, C. Zeyen, J. Phys. Chem. Sol. 60 (1999) 1573.
  11. Thermal variation of phonon frequency and line width in Ge studied by TAS spin-echo, Kulda J.1; Farhi E.; Zeyen C.M.E., Physica B, 297, Number 1, March 2001 , pp. 37-39(3).
  12. Self-energy of zone-boundary phonons in germanium: Ab initio calculations versus neutron spin-echo measurements, Kulda J, Debernardi A, Cardona M, de Geuser F, Haller EE, Physical Rev. B 69 (4): Art. No. 045209 Jan 2004.
  13. Diffuse neutron scattering in relaxor ferroelectric PbMg1/3Nb2/3O3, Vakhrushev S, Ivanov A, Kulda J, Physical Chemistry Chemical Physics 7 (11): 2340-2345, 2005.