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Mass spectrometers for vacuum, gas, plasma and surface science

DLS-20Ultra High Resolution Quadrupole Mass Spectrometer

Hiden Analytical Ltd. 420 Europa Boulevard Warrington WA5 7UN England T +44 [0] 1925 445 225 F +44 [0] 1925 416 518 E info@hiden.co.uk W www.HidenAnalytical.com

20 mm Pole Diameter Quadrupole Mass SpectrometerThe new DLS-20 system includesthe world first quadrupole massspectrometer with userswitchable dual zone operation.

Zone I – for high performanceover 200 amu mass range.Zone H – for ultimate resolutionat low mass, with mass rangeto 20 amu. HIDEN QUADRUPOLE MASS SPECTROMETER PROBES

DLS-20 QUADRUPOLE MASS SPECTROMETER

Why Zone H?Only the resolving power of Zone H gives ultimate detection limit for He in D2

Quadrupoles operate with RF and DC Voltages applied to their rods which then carry ions to the detector.

Certain voltage combinations can create ‘stability regions’ that transmit only ions of a particular m/z.

Scanning the quad’s voltages across the tips of these regions will carry only that ion to the detector.

The Zone I region is most often used. However, a second region, Zone H, offers much greater resolving power – which helps separate adjacent masses.

But only quadrupole electronics with both high power and stability can operate in this zone.

Hiden’s high power electronics is now offered with selectable Zone H capability for masses up to 20 amu and Zone I for masses up to 200 amu – in a single package.

Zone II operation provides ultra-high performance over the mass range to 20 amu

New HAL 1000 series – 9 mm pole diameter Quadrupole Mass Spectrometerextended to 5000 amu

2E+01

CPS

MASS/U

Scan of Ceasium Iodide Clusters 0 - 5,000 amu (6 amu FWHM peakwidth)

1E+0

1E+2

1E+4

1E+6

0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0

cps

Zone H

1E+00

1E+01

1E+02

1E+03

1E+04

1E+05

1E+06

1E+07

3.950 3.960 3.970 3.980 3.990 4.000 4.010 4.020 4.030 4.040 4.050

cps

Zoom view of He+peak at mass 4

Zone H - Peak width 0.013 amu at 10% peak height

+

The resolving power of Zone H compared to Zone I for He ions

Plot of Volts applied to the Quadrupole Rods to create stability regions

140

120

100

80

60

40

20

050 100 150 200 250 300

RF Volts/V

DC

Volts

/V

He - Zone IStability Region

Zone H Scan Line

Zone I Scan Line

He - Zone HStability Region

HeZone H

1E+00

1E-01

1E-02

1E-03

1E-04

1E-05

HeZone I

1E+00

1E-01

1E-02

1E-03

1E-04

1E-053.985 3.995 4.005

3.985 3.995 4.005

Zone I - High sensitivity/High abundance sensitivity1E+07

1E+06

1E+05

1E+04

1E+03

1E+02

1E+01

1E+00

4E+06

3E+06

3E+06

2E+06

2E+06

1E+02

5E+05

0E+00

cps

cps

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200

0 10 20 30 40 50 60 70 80

mass / u

1E+07

1E+06

1E+05

1E+04

1E+03

1E+02

1E+01

1E+0025 26 27 28 29 30 31 32 33 34 35

cps

mass / u

Zone H