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Electron Spin Resonance Spectrometer
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Electron Spin Resonance Spectrometer

Rs 1.05 Lakh/Piece Get Latest Price
Power 9V battery
Type Temperature/Humidity Meter
Parameter Temperature/Humidity/Dew Point
Dimension 135 x 60 x 33 mm
Weight 264 g
Humidity Resolution 0.1 degree
Display 44 mm x 29 mm
Electron Spin Resonance SpectrometerFeatures• FET based marginal R.F. Oscillator• Digital display of frequency• Excellent peaks display• Digital display of Helmoltz Coil Current• Compatible with general purpose CRO in X-Y modeIntroductionIn recent years Magnetic Resonance has developed into a very...
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Nunes Instruments

Gopalapuram, Coimbatore, Tamil Nadu
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Product Details

Product Specification

Power 9V battery
Type Temperature/Humidity Meter
Parameter Temperature/Humidity/Dew Point
Dimension 135 x 60 x 33 mm
Weight 264 g
Humidity Resolution 0.1 degree
Display 44 mm x 29 mm
Temperature Range 20 to 60,-20 to 60
Model No HT-305
Minimum Order Quantity 1 Piece

Product Description

Electron Spin Resonance Spectrometer

Features

• FET based marginal R.F. Oscillator

• Digital display of frequency

• Excellent peaks display

• Digital display of Helmoltz Coil Current

• Compatible with general purpose CRO in X-Y mode

Introduction

In recent years Magnetic Resonance has developed into a very useful and powerful tool in solid state research. In this method, use is made of the Zeeman interaction of the magnetic dipoles associated with the nucleus or electron, when placed in an external magnetic field. Accordingly, they are identified as NMR (Nuclear Magnetic Resonance) or ESR (Electron Spin Resonance). This form of spectroscopy finds many applications in the investigation of crystal structures, environmental effects, dynamic effects, defects in solids and in many diverse branches of Physics, Chemistry and Biology.

Elementary Magnetic Resonance

We know that the intrinsic angular momentum (spin) of the electron Scouples with the orbital angular momentum of the electron L to give a resultant J and this coupling gives rise to the ‘fine structure’ of the spectra. Further, under the influence of an external magnetic field (H) each of the level will split into (2j+1) sublevels (Zeeman effect) and the splitting of a level will be

DE = (gμ0H)mj

where μ0 is the Bhor magneton, g is the Lande’ g-factor and mj is the magnetic quantum number. As can be seen, the splitting is not same for all levels; it depends on the J and L of the level (s=½ always for one electron). However, the sublevels will split equally by an amount

DE = gμ0H or = hn0

where n0 is the frequency of the system. Now if the electron is subjected to a perturbation by an oscillating magnetic

field with its direction perpendicular to the static magnetic field and its frequency n1 such that the quantum hn1 is equal to E=hn0, we say that there is a resonance between n1 and n0. This will induce transition between neighbouring sublevels (mj = ±1) and in turn will absorb energy from oscillating field. Thus, at resonance, we get a peak due to the absorption of energy by the system.

Experimental Technique

If we consider a free electron and substitute the proper value of constants in the equation: g = 2.00, μ0 = 0.927X10- 20 erg/gauss & h = 6.625 X l0-27 erg sec, we get

n 0—= 2.8MHz/gauss

H0 That is ESR can be observed at radio frequencies in a magnetic field of a few gauss or in the microwave region in a magnetic field of a few kilogauss. The latter alternate has many advantages: improved signal-to-noise ratio, high resolution etc. and is always preferred for accurate work, though it is very sophisticated and expensive. However, if the basic understanding of the subject is the main criteria as is usually the requirement of class room experiments, the observation of ESR in low magnetic field and in a radio frequency region makes it a lot simple, inexpensive and

within the reach of every post-graduate laboratory.

Description of the ESR Spectrometer

A block diagram of the ESR Spectrometer is given below in Fig. 1, and a brief description follows.


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Electron Spin Resonance Spectrometer

Company Details


About us

Year of Establishment2009
Legal Status of FirmProprietorship Firm
Nature of BusinessManufacturer
Number of Employees26 to 50 People
Annual TurnoverRs. 2 - 5 Crore
IndiaMART Member SinceSep 2006
We, "Nunes Instruments", established in the year 1975, have extensive industry experience of 38 years, we are able to flourish widely in the industry. We are one of the leading Exporter, Importer, Distributor and Service Provider of Agricultural Instrument and Electrical Measuring Instrument. These are products are highly appreciated in the market for their efficiency, robustness, accurate results and durability. Moreover, these are widely catered to various industries for material testing and quality control tests. We are engaged in providing Instruments Repairing Services, Rental Services, Buy Back Exchange Offers & Calibration Services.
Our professionals have several years of experience and are thoroughly trained in all aspects of Instruments repair and service work of Measuring Instruments, Laboratory Instruments, Control Instruments and Test Equipment. We sell and supply all kind of spare parts for Laboratory Instruments and Equipments. We are interested in associating with reputed manufacturers and distributors to work as their authorized dealers and authorized service centers. Our Estimated clients are Southern Railway, Salem Steel Plant, Steel Authority of India Limited, Roots Industries Limited (Coimbatore), The Sree Meenakshi Mills Limited and many others.

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