Classical and quantum-mechanical picture of NRSE—measuring the longitudinal Stern–Gerlach effect by means of TOF methods

Arend, N.; Gähler, R.; Keller, T.; Georgii, R.; Hils, Thomas; Böni, P.

doi:10.1016/j.physleta.2004.04.062

Cited by 8 publications

(4 citation statements)

References 6 publications

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“…In the following we use the wave packet description of the coarse monochromatised neutron beam. For a detailed quantum mechanical description see [11]. While in NRSE, all coils are operated at the same frequency [12] , in MIEZE, the two coils are driven at different frequencies, ν 1 = ω 1 /2π and ν 2 = ω 2 /2π, with ν 2 > ν 1 .…”

Section: Modulation Of Intensity By Zero Effort (Mieze)mentioning

confidence: 99%

Large scales–long times: Adding high energy resolution to SANS

Brandl

Georgii

Häußler

et al. 2011

Nuclear Instruments and Methods in Physics Research Section A:

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The Neutron Spin Echo (NSE) variant MIEZE (Modulation of IntEnsity by Zero Effort), where all beam manipulations are performed before the sample position, offers the possibility to perform low background SANS measurements in strong magnetic fields and depolarising samples. However, MIEZE is sensitive to differences ∆L in the length of neutron flight paths through the instrument and the sample. In this article, we discuss the major influence of ∆L on contrast reduction of MIEZE measurements and its minimisation. Finally we present a design case for enhancing a small-angle neutron scattering (SANS) instrument at the planned European Spallation Source (ESS) in Lund, Sweden, using a combination of MIEZE and other TOF options, such as TISANE offering time windows from ns to minutes. The proposed instrument would allow obtaining an excellent energy-and Q-resolution straightforward to µs for 0.01 Å −1 , even in magnetic fields, depolarising samples as they occur in soft matter and magnetism while keeping the instrumental effort and costs low.

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Section: Modulation Of Intensity By Zero Effort (Mieze)mentioning

confidence: 99%

Large scales–long times: Adding high energy resolution to SANS

Brandl

Georgii

Häußler

et al. 2011

Nuclear Instruments and Methods in Physics Research Section A:

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“…Therefore the neutron state can be considered to consist of the three subsystems, namely the total energy, path and spin degree of freedom. In principle, a spin-independent energy manipulation of neutrons is also possible: for instance, the up-and the down-spin wavepackets, separated by a socalled longitudinal Stern-Gerlach effect [20,21], undergo successive fast-activated DC-RF and RF-DC flippers respectively, resulting in a positive energy-shift.…”

mentioning

confidence: 99%

Coherent energy manipulation in single-neutron interferometry

et al. 2008

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We have observed the stationary interference oscillations of a triple-entangled neutron state in an interferometric experiment. Time-dependent interaction with two radio-frequency (rf) fields enables coherent manipulation of an energy degree of freedom in a single neutron. The system is characterized by a multiply entangled state governed by a Jaynes-Cummings Hamiltonian. The experimental results confirm coherence of the manipulation as well as the validity of the description.Comment: 4 pages, 3 figure

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“…The used setup is shown in Figure 1: Two sets of MIEZE coils inside µ-metal shielding [9,4] are placed between two polarizers. The polarizers are polarising solid state benders [10], which polarise the transmitted beam, but keep the collimation intact [11].…”

Section: Setup Of the Experimentsmentioning

confidence: 99%

Tests of modulated intensity small angle scattering in time of flight mode

Brandl

Lal

Carpenter

et al. 2012

Nuclear Instruments and Methods in Physics Research Section A:

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We report results of tests of the MISANS technique at the CG-1D beamline at High Flux Isotope Reactor (HFIR), Oak Ridge National Laboratory (ORNL). A chopper at 40 Hz simulated a pulsed neutron source at the beamline. A compact turn-key MISANS module operating with the pulsed beam was installed and a well characterised MnSi sample was tested. The feasibility of application of high magnetic fields at the sample position was also explored. These tests demonstrate the great potential of this technique, in particular for examining magnetic and depolarizing samples, under extreme sample environments at pulsed sources, such as the Spallation Neutron Source (SNS) or the planned European Spallation Source (ESS).

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Classical and quantum-mechanical picture of NRSE—measuring the longitudinal Stern–Gerlach effect by means of TOF methods

Cited by 8 publications

References 6 publications

Large scales–long times: Adding high energy resolution to SANS

Large scales–long times: Adding high energy resolution to SANS

Coherent energy manipulation in single-neutron interferometry

Tests of modulated intensity small angle scattering in time of flight mode

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