SU695307A1 - Moessbauer spectrometer with laser interferometer for absolute measuring of rate of relative motion - Google Patents

Description

light-sensing elements, which are smaller than the distance between interference bands; and. The registration unit of interference bands is made according to the C-trilger1 circuit, the R to C inputs of KOTOipoTo are connected to the separation outputs of the connecting elements. The system of mirrors is made in the form of two rectangular TipexinpaiHHbix trisisms, arranged in such a way that the hypotenuse of one side of the shrimp is in contact with the side of the other side of the other. % reflective coating.

FIG. 1 Lrivedbna scheme of the Meosbauer spectrometer; in fig. 2 is a diagram of a system of mirrors in vvde: p |

St1-ektramet1p (Fig. 1) consists of an electrospray drive (vibrator) 1, on which a pin mirror 2 is fixed, a generator of a low-frequency signal 3, a feedback unit 4, a memory block 5 with address and arithmetic registers, a software device 6 ,, helium-nonO (BUT new laser 7, interference iris 8, focusing lens 9, photo1P1p1Ie1mnik 10, block for detecting interference fringes And, sources of resonant ga | p; them; gamma quanta 1 5. Photoconnection is in the form of two photocells with rectangular sensitivities1M; n About |

The proposed device works as follows oi6pa3QM.

The source of resonant radiation 12 is driven by an electrodynamic, 1 driver relative to the rest of the absorber 13, the detecting unit 14 registers the flow of gamma quanta after the absorber, the amplifier-detector 15 selects the gamma-quanta and transmits the electrical pulses generated in the memory 5 to 5 (BUT). The motion law of the workshop sets the generator of the pre-frequency signal 3, and the feedback unit 4 permits the processing of the set point. g high precision. 1Mon10X | romatic coherent beam of light, which is detected by the laser 7, the outflow through the interferometer, the diagonals of which are a translucent mirror (see Fig. 2), is divided into two beams. An odi1N beam, orra; from the lag of the brain, falls on a photo receptacle 10, another, turning 1x in a threefold trisma 90 °, replacing it with mirror 2, ukrshlennym on the drive 1. Both beams, focus on the lens 9, (when combining , O1 represents a photoreceiver in the interior of the interfer- entiated picture in the form of alternating, dark and Light poyos, arising due to the optical progress of the two-way interferometer arm.

the source of resonance radiation is set in motion, then the interference bands, moving along (photoelectric transducer, on its signals, the frequency of which IB always corresponds to the speed of movement of the source of resonant radiation, IB.

The registration pattern of the strips 11 is performed in such a way that the I1 pulses corresponding to the interference fringes enter the memory unit if the strip passes through both photosensitive elements. These pulses, using address and arithmetic registctipipob, are accumulated in memory block 5 (B). In principle, the spectrometer simultaneously with the removal of the gamma, -resonant spectrum allows one to take a calibrated spectrum, which is a true function

Pe, displacement.

A flowchart of the 1 system in the form of a single prism block is shown in FIG. 2. In this prism, on the VGDE and VZHZG planes, 100% or 1% reflecting

coverings, and on the VGIK plane - 50%. This embodiment improves the noise immunity of the device from all sorts of vibrations.

The design of the proposed spectrometer is about; it ensures the linear dependence of the gradual characteristic of the | And the speed

moved | and even very small 3 times x speeds of relative displacement.

The proposed spectrometer is

to carry out studies on resonant transitions, for example, such as Ge, superfluously absorb | KOTOipbix Scheni lies near cKQpocTHoro vol, using the method of absolute calibration of

.

Claims (2)

1. Mössbauer spectrometer with a laser interferometer for absolute measurement, and speed relative to movement, containing a system of mirrors and fixed on the axis of electrodynamic drive movable mirror source ha; mmquantum, Absorber gamma-1K1vant, memory block connected by inputs with corresponding unit the repetition of the interference D1OLOS, an amplifier-discriminator of gamma-square ants, a low-frequency generator 1si1 signal, connected by an output to an electrodynamic drive, and a photodetector that differs That, with 1Heli more and ToqHOiCTH measurements at low speeds, we perform a photo merchant in the form of two light-sensitive elements spaced apart, the distance between the interferential bands, with the unit registering the interconnect | Ion The lanes are outlined, according to the C-trI1tera scheme, the inputs / and C of which are connected to (the separate outputs of the light-sensitive elements). 2. Miesbauer’s icneKTpiOMexp under item 1, which is based on the fact that, in order to increase the noise immunity of the device, the system of mirrors was performed. In the avada of two p. moreover, a 50% reflective coating was applied to the hypotenuse face, and nl of displaced catheter faces and shchrizm - a 100% reflective coating. Sources of information taken into account by the expertise: 1.Rev. Sci Instr., 1965, 36 № 12. 2.I. G. Corgrove R. L. Collins “NucL, Instr, Meth, 1971, 95, 269-274 (prototype). .Z