iDiffBB – Standard and Widebore Diffusometry Probes

The iDiffBB (standard bore) and iDiffBBWB (wide bore) probes are broadband gradient probes optimized for very strong gradient pulses and suitable for 5 mm sample tubes. The probes offer ¹H-¹⁹F, X-broadband and a lock channel as well as a wide temperature range from -100 °C to 180 °C.

Bruker’s diffusometry iProbes for 5 mm NMR sample tubes cover a wide temperature range from -100 °C to 180 °C. While the standard bore version iDiffBB offers up to 17 T/m gradient strength, the wide bore version iDiffBBWB offers up to 28.5 T/m. The iDiffBB probes are broadband gradient probes (³¹P-³⁵Cl) with Automatic Tuning Module (ATM) for NMR diffusometry that allows to measure diffusivities down to 1x10^-14 m²/s (iDiffBB) or 1x10^-15 m²/s (iDiffBBWB) for samples with T₁ > 1s and T₂ > 100 ms. The probes provide a high-performance water cooled single axis gradient, variable temperature measurements are possible in the range of -100 °C to 180 °C. Together with the ATM this allows a series of fully automatic variable temperature experiments. The broadband channel configuration enables to observe a wide range of nuclei from ¹H down to ³⁵Cl.

Features

Standard or Wide Bore Probe version
Gradient strength of up to 17 T/m (standard bore) or 28.5 T/m (wide bore), water cooled
¹H-¹⁹F / X-BroadBand (³¹P-³⁵Cl) / Lock Channel
Automatic Tuning Module (ATM)
Sample transfer via SB-BST
Variable Temperature Control (compatible to Bruker variable temperature equipment)
BBI or BBO configuration
Built-in deuterium filter optional (allows ²H and ⁶Li diffusometry experiments)

Applications

Multi-Nuclear In-Situ Pulsed Gradient Spin Echo (PGSE)
NMR Observation of Ion Mobility in Ionic Liquids Used
in Battery Technology

The need to decrease greenhouse gas emissions has strongly increased the need for electric energy storage devices such as rechargeable batteries and super capacitors. Lithium ion batteries currently offer the highest energy density and are therefore of great interest.

Polymer Weight Distribution measured by PGSE NMR

The molecular weight distribution (MWD) and the polydispersity index (PDI) are important numbers for characterizing polymers.

Specifications

iDiffBB/WB
Bore	SB / WB
¹H frequency range	300 – 800 MHz
RF channels	¹H-¹⁹F, ³¹P-³⁵Cl. ²H Lock
Requirements	MR Diffusion / MR Microscopy Accessory
ATMA	Yes
Gradient
Directions	z
Gradient strength per direction	17 T/m (SB) or 28.5 T/m (WB)
Cooling	Water
Maximum current tested	60 A
RF Coil	BBO or BBI design, one coil tunable ¹H-¹⁹F + ²H lock, second coil BB tunable ³¹P – ³⁵Cl
Standard sample temperature range (5 mm)	-100 °C - 180 °C
Sample diameter	5 mm

Accessories

Diff Software Application
Dynamic Center for data processing
Compatible with IconNMR/SpinPilot and Bruker Sample changers for automation