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Spectroscopy RTP

EPR Spectrometers

Bruker EMX (Solid State CW-EPR)

Microwave Frequency: X-Band (nominally 9.7 GHz)

Mode of operation: Continuous wave

Microwave bridge power: 0-90dB (200mw @ 0dB)

Field: 100 - 550 mT

Standard Cavity: Bruker SHQ (super high Q spherical mode Ideal for point samples)

Experiments Available:

1D

  • CW Field Swept
  • Fixed field time trace
  • Continuous Optical excited measurements (Cavity Dependant)

2D

  • Time resolved / CW Field Swept
  • Microwave power / CW Field Swept
  • Angular dependence / CW Field Swept
  • Trigger Optical excited measurements (Cavity Dependant)

Bruker EMX – Micro (Solution State CW-EPR)

 Microwave Frequency: X-Band (nominally 9.7 GHz)

Mode of operation: Continuous wave

Microwave bridge power: 0-60dB (200mw @ 0dB)

Field: 50 - 950 mT

Standard Cavity: Bruker SHQE (super high Q economy Cylindrical mode Ideal for sample tubes )

Variable temperature: Bruker BVT3000 range 100K – 600K

Experiments Available:

  • 1D
  • CW Field Swept
  • Fixed field time trace
  • continuous Optical excited measurements (Cavity Dependant)
  • Spin trapping
  • 2D
  • Time resolved / CW Field Swept
  • Microwave power / CW Field Swept

All experiment can be conducted at Variable temperature

Instrument: Bruker E580 (Research grade EPR)

Microwave Frequency: X-Band (nominally 9.7 GHz) or Q-Band Nominally (34 GHz)

Mode of operation: Continuous wave / Pulsed / Rapid Scan

Microwave bridge power: CW 0-60dB (150mw @ 0dB)

Field: 0 - 1250 mT

Standard Cavity: Bruker MD5 (depends on operation though)

Variable temperature: Bruker BVT3000 range 100K – 600K

ESR900 cryostat 10K-300K

CF935 cryostat 4K-300K

Experiments Available

(all available at X and Q band unless stated)

1D

  • CW Field Swept
  • RS field Swept (X-Band Only)
  • Fixed Field FT-EPR
  • Fixed field time trace
  • continuous Optical excited measurements (Cavity Dependant)
  • Relaxation time measurements (T1 & T2)
  • Spin trapping

 

2D

  • Time resolved / CW Field Swept
  • Time resolved / Fixed Field FT-EPR
  • Time resolved / RS field Swept (X-Band Only)
  • Microwave power / CW Field Swept
  • Field Swept Relaxation time measurements
  • ESEEM
  • ELDOR (DEER)
  • ENDOR (X-Band Only)
  • Transient EPR
  • Echo detected optical excitation sweeps.

 

All experiments can be conducted at variable temperature and under optical excitation.

Available Sampel holders:

Dual Axis Goniometer

Single axis goniometer

 

4mm OD Quartz tubes

1mm OD Quartz Tubes

 

Willmad TE102 Aqueous flat cell

Willmad TM110 Aqueous flat cell

Wilmad’s Electrolytic Cell Assemblies

Available Cavities: All Bruker unless otherwise stated

Name

Designation

Mode

Q (unloaded)

Optical access

Comments

Standard Rectangular

 

ER4102ST

TE102

2500

Yes

 

Double Rectangular

ER4105DR

TE104

3000

Yes

 

Cylindrical TM-Mode

 

ER4013 TM

TE110

3500

Yes

 

Spherical super High Q

ER4122SHQ

N/A

7500

No

 

Cylindrical High Sensitivity

ER4199HS

TE011

5000

No

 

Cylindrical High Sensitivity

ER4199HS

TE011

5000

Yes

 

Cylindrical Super high Q

ER4122SHQE

TE011

5000

Yes

 

Dielectric Flexiline Resonator

ER4118 X-MD5

TE011

4000

Yes

Pulsed

ENDOR Flexiline resonator

EN4118 X-MD4

TE011

 

Yes

Pulsed

Pulsed Q-Band Flexiline resonator

EN5107D2

 

 

yes

Pulsed

Rapid Scan Resonator

 

 

6000

yes

Rapid Scan

Loop Gab

Custom

5 loop 4 gap

250

no

Home made