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Details, datasheet, quote on part number:R8810pdf
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Datasheet text preview:
Specifications
Parameter Gain (Typ.) Dark Current (Typ.) Operating Pressure Level (Max.) Bake-Out Temperature (at 10-4 Pa, Max.) Supply Voltage (Max.) Operating Gain (Max.) Faraday Cup Voltage (Max.) Effective Area Number of Dynode Stages Total Built-in Resistor Value Polarity of Detected Ions Recommended Supply Voltage Recommended Faraday Cup Voltage Recommended Input Ion Energy -1000 V 0V 10 eV 9 stages 9 M Positive -1500 V -1500 V 5 x 105 100 V 3 mm Dia. 13 stages 13 M 2x R8810 103 (at -1000 V) 1x 3 x 10-14 A (at -1000 V) 1 Pa * 350 °C -2000 V 5 x 106 200 V R8811 105 (at -1500 V) 3 x 10-14 A (at -1500 V) 1 x 10-2 Pa
PRELIMINARY
Ion Detectors
* When operating at pressure of 1 Pa, use caution to prevent discharge in particular at the junction point between the ion detector and feedthough. Also be sure to maintain a safe distance between the ion detector and the metal parts around it.
Dimensional Outline
R8810
15
(Unit: mm)
EFFECTIVE AREA 3 Dia.
15
ANODE LEAD
FARADAY CUP LEAD
14
HAMAMATSU
HIGH VOLTAGE LEAD
TEM A0022EA
R8811
20 EFFECTIVE AREA 3 Dia. 20 ANODE LEAD FARADAY CUP LEAD
19.5
HAMAMATSU
HIGH VOLTAGE LEAD
TEM A0021EA
Subject to local technical requirements and regulations, availability of products included in this promotional material may vary. Please consult with our sales office. Information furnished by HAMAMATSU is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions. Specifications are subject to change without notice. No patent rights are granted to any of the circuits described herein. ' 2001 Hamamatsu Photonics K.K.
HOMEPAGE URL http://www.hamamatsu.com HAMAMATSU PHOTONICS K.K., Electron Tube Center 314-5, Shimokanzo, Toyooka-village, Iwata-gun, Shizuoka-ken, 438-0193, Japan, Telephone: (81)539/62-5248, Fax: (81)539/62-2205
U.S.A.: Hamamatsu Corporation: 360 Foothill Road, P. O. Box 6910, Bridgewater. N.J. 08807-0910, U.S.A., Telephone: (1)908-231-0960, Fax: (1)908-231-1218 E-mail: usa@hamamatsu.com Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: (49)8152-375-0, Fax: (49)8152-2658 E-mail: info@hamamatsu.de France: Hamamatsu Photonics France S.A.R.L.: 8, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone: (33)1 69 53 71 00, Fax: (33)1 69 53 71 10 E-mail: infos@hamamatsu.fr United Kingdom: Hamamatsu Photonics UK Limited: 2 Howard Court, 10 Tewin Road Welwyn Garden City Hertfordshire AL7 1BW, United Kingdom, Telephone: 44-(0)1707-294888, Fax: 44(0)1707-325777 E-mail: info@hamamatsu.co.uk North Europe: Hamamatsu Photonics Norden AB: Smidesv gen 12, SE-171-41 SOLNA, Sweden, Telephone: (46)8-509-031-00, Fax: (46)8-509-031-01 E-mail: info@hamamatsu.se TEM 1011E02 Italy: Hamamatsu Photonics Italia: S.R.L.: Strada della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: (39)02-935 81 733, Fax: (39)02-935 81 741 E-mail: info@hamamatsu.it NOV. 2001 IP
Structure
These compact ion detectors have an off-axis structure and a Faraday cup needed for ion detection in Quadrupole mass spectrometers which are capable of making precise measurements over a wide dynamic range with a high S/N. The structure also incorporates a voltage divider, which is essential for discrete type electron multipliers. By simply wiring the high voltage, the signal and the Faraday cup, reliable operation can be achieved without adding any other parts.
R8811
Detection Efficiency vs. Input Ion Energy
The electron lens created by the Faraday cup, the ion deflection electrodes and the electron multiplier electrodes maintains high detection efficiency even when input ion energy increases.
100 90
TEM B0059EA
DETECTION EFFICIENCY (%)
80 70 60 50 40 30 20 10 0 0 10 20 30 40
R8811
GND
Q-POLE POSITIVE ION
FARADAY-CUP
etectors ct Ion D Compa
Quadrupole mass spectrometers used for residual gas analyzers have been downsized to solve problems of high-pressure operation and limited installation space. A trend of the downsizing would be an ever-greater degree in the future. However, it cannot be achieved just by reducing the ion source and Quadrupole electrode sizes. Small ion detector is also required essentially. To meet the requirement, Hamamatsu has developed compact ion detectors. These unique ion detectors break the performance barriers on conventional electron multipliers and will prove the ideal result for your needs.
ELECTRON
50
60
Q-POLE
INPUT ION ENERGY (eV)
-1000 V
TEM C0025EA
Gain Characteristics
Electron trajectories inside the ion detectors are optimized by special 3D simulation technique to provide good linearity for the gain performance as a function of supply voltage.
107 106 105 104 R8810 103 102 101 100 100 R8811
TEM B0060EA
Ions emitted from Quadrupole are multiplied while being deflected and focused by the electron lens created by the combination of the Faraday cup, the ion deflection electrodes and the electron multiplier electrodes. The layout of the Faraday cup, the ion deflection electrodes and the electron multiplier electrodes are designed by special 3D simulation of ion and electron trajectories. This layout allows detecting the input ions with high efficiency.
Life Characteristics
Despite the compact size, the electron multiplier electrodes have a large secondary emissive surface, delivering a long service life equal to that of conventional electron multipliers. A drop in gain after exposure to air is also minimized because the secondary electron emissive surface is resistant to carbon absorption, which is a cause of gain decrease. It ensures reliable operation over extended periods of time. Especially, R8810 has an extra advantage of being able to operate under high pressures.
GAIN
1000
10000
SUPPLY VOLTAGE (V)
Noise Characteristics
The electrode layout and structure are carefully designed to minimize ion feedback and discharge, allowing operation at a stable base line even under high pressure.
10-9
TEM B0061EA
-3000
TEM B0036EA
-2500
10-10
-2000
Right : R8810 Left : R8811
R8811
OUTPUT CURRENT (A)
SUPPLY VOLTAGE (V)
10-11
-1500
10-12 R8810 10-13
-1000
-500
0 0.001
0.01
0.1
1
10
100
1000
10-14
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
ACCUMULATED OUTPUT CHARGE (C)
TIME (Min.)
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