Speaker
Description
SIKA, the new cold-neutron triple-axis spectrometer was built on the CG4 beam port at the OPAL reactor, ANSTO. We report the capabilities and current status of SIKA in this users meeting. A versatile instrument, SIKA provides sample environments with temperature capacities from dilution temperatures below 50 mK up to 750 K, and magnetic fields of up to 12 T, using the well-developed control and analysis software based on SPICE. Several scientific examples demonstrating the proficiency of SIKA are reported such as;observation of higher harmonics of the helical magnetic phase of MnP as an example of elastic magneticscattering; measurement of the phonon-dispersion in Al with the estimated slope of the transverse acoustic phonon at 32.4meV; the spin-wave dispersion in MnF$_2$ along the c-axis enabling determination of exchange parameters J$_1$ = 0.0305 meV, J$_2$ = -0.1534meV and, D = 0.1427 meV; and observation of one of the crystal field excitations from Pr$^{3+}$ in PrFeO$^3$ powder. These results can help you to estimate beam time of experiments for your proposals.
Finally, we discuss recent development of SIKA. A $^{3}$He polarization analysis system will be ready for SIKA to perform polarized neutron scattering experiments in 2020. SIKA will also be able to accommodate a RITA-type multiple-analyzer system to perform experiments more efficiently by 2020.
| Travel Funding | No |
|---|---|
| Do yo wish to take part in the poster slam | No |
| Level of Expertise | Experienced Researcher |
| Speakers Gender | Male |
