IMS 1280 HR
IMS 1280 HR - Ultra High Sensitivity Ion Microprobe for Geosciences and Nuclear Forensics
 Acutance Scientific Ltd 2011 - 2017



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For more detailed information on the above data, or further information on the CAMECA 1280-HR, contact Acutance

at or on +44 (0)1892 300 400.

E & OE

CAMECA IMS 1280-HR high sensitivity SIMS

instrument offers outstanding performance for the

entire application range in Geosciences, as it provides

the optimized transmission at high mass

resolution,a versatile multicollection system and a

flexible primary ion column with 2 ions sources

Geosciences and Geochronology

Nuclear Forensics / Automated Particle


The new IMS 1280-HR Ultra High Sensitivity magnetic

sector SIMS combines the well-proven features of the

IMS 1280 model with new developments oriented

towards specific geoscience applications that require

very high mass resolution capabilities both in mono-

and multicollection mode.

• K/Ca dating: MR >30,000 (monocollection)

• Rb/Sr dating: MR >20,000-40,000 (monocollection)

• Mg & metal isotope ratios: MR > 5000


Examples in the carousel above include 

1) Transmission at very high mass resolution (monocollection) in Adularia. A 40K transmission > 75c/s/ppm/nA could be achieved at MRP (10%) ~ 34,000.

2) Automatic Particle Measurement analysis of a pure Uranium sample with dual isotopic composition. Particle screening uses APM auto-threshold algorithm

allows to identify 6,653 particles. The two isotopic signatures expected at 0.5% and ~1% are clearly distinguished

3) 25Mg/24Mg and 26Mg/24Mg isotope analysis in multicollection mode

Sample: Olivine San Carlos

Conditions: Ip (O-)=8nA, spot size ~20μm

Mass resolving power, multicollection:

slit#2 (250μm) ⇒ MRP(50%)~5,000

slit#3 (150μm) ⇒ MRP(50%)~8,300

NMR magnetic field control

10 spots repeatability test

Excellent repeatability was obtained for the δ25Mg and δ26Mg measured with multicollection at very high mass resolution. A reproducibility of 0.2-0.3 permil

(1SD) could be achieved, the same performance being obtained when increasing mass resolution from MRP(50%)~5,000 to ~8,300.

4) Conventional U-Pb Concordia plot age determination for Ginghu zircon (By courtesy Xian-Hua Li and al. IGGCAS Beijing Geochemistry Geophysics

Geosystems (2009).

40Ca/40K test  with Adularia (KAlSi3O8) : [40K] = 14.53 ppm 

Performance reached:  105 cps / ppm / nA MRP(10%) ~ 34,000 (monocollection).

5) Titanium concentration in Hadean zircons is an indicator of the crystallization temperature. Quantitative ion imaging of titanium in zircon permits detailed

insights of Ti concentration distributions. These ion images show that Ti contents greater than 20ppm in the Jack Hills zircons are associated with cracks or other


The IMS 1280-HR offers outstanding ion imaging capabilities together with high flexibility to switch from oxygen to cesium sources in a very short time.

207Pb/206Pb ages (Ma) are shown in the left-hand image using positive ion analysis using a ~4μm O- primary beam..

The right-hand images show a negative ion analysis with a ~1μm Cs+ primary beam.

Ion images are shown on top of secondary electron images.

Data from T. M. Harrison et al., Earth and Planetary Science letters 261 (2007) 9-19

This Magnetic Sector Ion Microprobe includes....

Versatile multicollector system for simultaneous isotope measurements.

Dual, reactive primary ion sources. Primary beam monitoring during acquisition.

Storage chamber with 6 sample-holders.

Highly reproducible sample stage.

High resolution magnetic field control. NMR magnet control.

Unique image acquisition capabilities.

Remote monitoring, fully PC-based automation, robust digital electronics...

The redesign of the coupling section with the implementation of a new hexapole minimizes on-axis second order aberrations.

The peak shape in multicollection mode is greatly improved thanks to a modification of the magnet pole piece boundary. (The ions no longer pass between

bent sections of the magnetic coils).

Optimized vacuum for background reduction (light elements, hydrides).

New peak jumping mode using an electrostatic voltage, instead of magnetic field, for improved stability when performing high mass resolution

measurements in monocollection mode

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