Probes

DiffBB

The DiffBB is a broadband gradient probe optimized for very strong gradient pulses and suitable for 5 mm sample tubes. The probe offers ¹H-¹⁹F, X-broadband and a lock channel as well as a wide temperature range from -100 °C to 180 °C in a standard bore design.

Standard Bore Probe for 5 mm NMR sample tubes, a max. gradient strength of 17 T/m and a wide temperature range from -100 °C to 180 °C. The DiffBB is a broadband gradient probe with the Automatic Tuning Module (ATM) for NMR diffusion investigations of a wide range of diffusivities down to 1x10^-14 m²/s (T₁ > 1s and T₂ > 100 ms). The DiffBB provides 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 ¹⁵N.

Features

Standard Bore Probe, also compatible to WB and SWB magnets
Gradient strength of up to 17 T/m, water cooled
Switching time < 300 µs
¹H-¹⁹F / X-BroadBand (³¹P-¹⁵N) / Lock Channel
Automatic Tuning Module (ATM)
Sample transfer via SB-BST
Variable Temperature Control (compatible to BSVT, BCU,…)
BBI or BBO configuration

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.

A signature of non-Gaussian diffusion in porous systems

Diffusion is ubiquitous in porous systems and NMR may provide essential information about the underlying complex microstructure non-invasively. However, the interpretation of the NMR signal and its connection to the presence of non-Gaussian footprints or several Gaussian compartments is intricate.

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Accessories

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

Specifications

DIFFBB
Bore	SB / WB / SWB
1H frequency range	300 – 800 MHz
rf channels	¹H-¹⁹F, ³¹P-¹⁵N. ²H Lock
Requirements	MR Diffusion / MR Microscopy Accessory
ATMA	Yes
Gradient
Directions	z
Gradient strength per direction	17 T/m
OD	40 mm
Rise Time (5-95%), 0-60A,120V	< 300 µs
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 – ¹⁵N
Standard sample temperature range (5 mm)	-100 °C - 180 °C
Sample diameter	5 mm

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Contact Expert

MR microscopy & MR diffusion applications team: micdiff@bruker.com