JPS59203356A - Cathode and gas discharge tube - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The present invention 11. : child emission electronics, further 9
If , 'i is determined, then 13. do.

The invention can be used in gas family devices such as flash gas discharge tubes for flash valves, gas discharge arresters, and electron tubes.

Tungsten shade frosted with cesium pH;
.

Gomoiunova M, V, Emission
Electronics.

Moscow, Nauka Publ.
1966, P195'lJlI).

This 1ζ tree J':L has a relatively working [91 number] and is about 1,66θ■ at a cathode temperature of 600C, so its emission ability is rather low, and at this temperature 0,
1 mA//c7I! Do not exceed. Furthermore, this cathode 1
17. The filtration property is not sufficiently stable during operation, especially in the presence of strong ions, which under the above conditions rupture the cesium membrane on its surface. Gas family 1. (L
Tubes, especially flash gas release? In some cases, the discharge starting voltage of 117 iJ is too high, and its lifespan is short.

What's even more troublesome is the engineering that manufactures the cathode mentioned above! 1
1, it is extremely difficult to measure the cesium deposited on the negative j+8 surface.

It is necessary to accurately determine 5t++H of cesium.

This is because the cesium on the surface of the cathode is
! This is because it determines the ability to release children. Cesium 9111
Technically, the fixed value is 9M = j·:, which precludes the use of such a do4 frame in gas discharge tubes and electroex υ4.

The cathode is manufactured as an i-complex, which is much simpler to use. A cathode using a cesium compound as an electron emitting material has the highest emission ability among known B<1. A gas discharge tube having such a cathode has the lowest starting voltage of discharge 1)i1.

As is known in the prior art, (Yuse'J# is +j,
i, j include CFf refractory metals such as molybdenum, tungsten, tantalum, niobium or mixtures thereof, and gases I1. lJig gold 1, cedar, and t, i; additions to improve the formation process! TS' containing l//)
+' 4 people 1'' make a shade as a body and attach a layer of a sintered body to a sintered body with a layer of a gas-emitting substance such as charred samurai cesium or chromium r passesium (West Germany R+j'l
-Out F, 1r4ij3.002,033@01. T(
Ol, T61106198G4μ July 24th public attendance;
stomach).

Gases (metals that can be extracted are titanium, zirconium, vanadium, hafnium, or small aggregates thereof).

- Break, 4 + 'l engineering 1 to revise J% Addition Calo 9 course is an amalgamation of aluminum and aluminum.

Above, the discharge of the HE tube in the gas family with 1 (5) starting voltage is 150-190V, which varies depending on the composition of the sintered body, and the discharge starts after a flash of 1o, o o 01ul.・IIN is 155 to 2DDV, and practically no sputtering occurs in 1 odor control (C,
6 West Toitsu 1F 41, j 1141.4j! ! 1
．． 4).

1111 is known to consist of a refractory metal, or a mixture containing such a metal, and a sintered body containing an electron-emitting metal (for example, West German patent 1j%). (1 No. 3.008.518';3'
C1ass■ (0 engineering J61106. September 1, 1980
(released on the 1st).

In this cathode, the electron-emitting substance contained in the matrix contains barium ions! :, J Takegaranari, other? 4
The child-emitting fC substance is dispersed within the pores of the sintered body052
In MO4, M represents a refractory metal. The above-mentioned IN1 flammable metals are usually heavy bound metals belonging to Group TV, Group II or Group II of the rate table, such as zirconium, tungsten, tantalum or molybdenum. .

Furthermore, in the conventional technique M'f, the gas discharge tube is filled with ionized gas. Spaced apart within 'l' 1
It has two electrodes. One of these electrodes is Yinshin, which is made from the cathode mentioned above (see RJJF, West German Review Section I).

This discharge tube has an inner diameter of 5, and Yin Ji: 1+ is 1 working pole to 3
7mrn It's mown. Pressure xenon to 125 TIr
Ma! Please charge the discharge tube to 1.
;! : Starting '6 pressure 4.5KV.

h', r 71 beg? lrJ'E is 190 V, and the pulse discharge starting voltage is 9. QKV is 132V.

I1-! Release 1. T, (similar in +42-)
P3J dust between f and 20 +1!1.

The inner diameter is 2.57'li,'+, and the xenon is
201111i+Hg °CiF! The flash energy was 11.5.7 mm, the pulse emission pressure was 3.5 KV, and the discharge starting voltage was 176 V.

In this case, the discharge voltage was maintained at the initial voltage after 1.500 flashes.

This cathode is exposed to radiation, and in the working process the cesium compound 4'v reacts with the metal forming part of the hexagonal body.

The result] I! The cesium in the f-zone is in a state of transformation, and the Yin Jii
ii's production %q1di・岑'1 f (Ij<slightly, therefore the /i groove capacity of the cathode increases.

During the production process, cesium is continuously released from the surface of the electrode, and this is even more powerful during ion bombardment and destruction. Vaporized cesium is +s as a result of the above 1+%
The amount of cesium in the cathode supplied by the cesium atoms coming from within the body thus gradually decreases, and the emission capacity of the cathode decreases accordingly. This also means that the emission of a gas discharge tube using this cathode is +1. The starting voltage is set to 9.5, which shortens the life of the discharge tube.

It is an object of the present invention to provide a cathode that stably maintains i% emission capacity during long-term operation.

Another object of the present invention is to use the gas family fC (,
The object of the present invention is to provide a tube with a stable and low discharge start temperature of <2C during long-term operation.

The cathode of the present invention is an anode made of a sintered body containing refractory gold λ4 or a mixture thereof and a πL electron-emitting substance containing an aluminosilicate of cesium or rubidium.

The sintered body contains 05 to 25% of aluminosilicate of cesium or rubidium, and the remainder is a refractory metal or a mixture thereof, which contributes to sufficiently improving the emission performance of the cathode, 41 can be produced stably for a long period of time even under strong ion & 571 conditions.

In order to successfully achieve radioactivity, it is desirable that the cesium or rubidium aluminosilicate have the following composition:

xM20-yA120. In the jzsio2 formula, M is C
8 or Rb, x = 'I, ~6, y = 1-2, z = 1-6.

Furthermore, in order to maximize the emission capacity of the cathode, the sintered body should contain 2, Kel 854j (!7i:%) and cesium alumino silicate J#+', 15j+ (Chu%), and the boundary should be as follows. The composition is advantageous.

C820A12032s1o2 In addition, the sintered body contains nickel 85% in order to enhance the release into the anion containing the L-emitting substance.
and 15% rubidium aluminosilicate,
It is convenient for the salt to form L1 next.

Rb2OAl2O, 2SiO2 Also, the emission ability of the cathode used in powerful gas radiation
In order to achieve this, the sintered body contains 90 kN (%) of tantalum and 10 N% by weight of cesium aluminosilicon salt, and the salt preferably has the following composition.

0EI20 Al2O,2SiO2 ion 1jii
, i''11 In order to reduce the emission capacity of the cathode,...
l:＾Feed body is zirconium niobium 1 ” 1 m
The following composition is recommended for the salt.

C820A12032S1o2 The present invention also provides a gas discharge tube filled with an ionized gas and having two spaced apart electrodes within the tube. - of this electrode is a cathode, and is made of the above-mentioned cathode.

The cathode of the present invention can maintain stable and high release performance even under strong ionic equilibrium for a long period of time.

A gas discharge tube using such a cathode has the advantage of being able to maintain a stable and low discharge starting voltage over a long period of time, and of being small in size.

The invention will be illustrated in more detail with reference to the accompanying drawings, in which: FIG.

The cathode 1 (FIG. 1) of the present invention is a sintered body containing a refractory metal or a mixture thereof and an electron-emitting substance. The refractory metal referred to here is one of the following metals: nickel (@ point = 1.7.28 K), zirconium (
T = 2,128K), hafnium (T = 2.250
K), "T/S' (T = 3.270 K),
Niobium (T==2,770K), Shi4mu (T:3,30
8 K'), molybdenum (T = 2,890K), tungsten (T, = 3,650K) or these elements 1
He is a good salesman.

71, the child-releasing material includes an aluminosilicate of cesium or rubidium.

l'45,! i! The viscosity of Hi 1 is 0.5 to 25% by weight of cesium or rubidium aluminosilicate.
with the remainder being refractory metals or mixtures thereof.

This component ratio can provide the cathode with high emission performance. If the cesium or rubidium aluminosilicon M salt content λIt is less than 0.5% by weight, 4111 g
The emitted current is 1/1. OOOp A/c
nt cannot be exceeded. Such compounds are clearly of no practical use. If the aluminosilicate content of cesium or rubidium exceeds 25% by weight, the collected emission current exceeds several tens of mA/cm, but since the components of the sintered body cannot form alloys, the cathode Totally unusable.

Cesium or rubidium aluminosilicates have the following composition:

XM20-yA1203 ・zsi○2 In the formula, M is 08 or Rb, and X-1~3.7=1~2. z=1~6
It is.

The emission current collected from Yin Yi 1 is a function of the particular values of x, y and 2. To illustrate this, the following table shows the electron emission properties of cesium aluminosilicate.

Table Os OAI O2Si02 100
2 23 0820 Al2O34S102 60
0s20 Al2O35in2 502
08□OAl2O55SiO230 30B OAI O3SiO210 225 0820,2A12033SiO21030s O2
A12036sio2 10208202
The A12035S1025 rubidium aluminosilicate salt has electron emission values very similar to this, with a somewhat lower collected emission current.

Therefore aluminum 7 silicate X, 7. When the value of Z is within the above range, rubidium aluminosilicate can be used as the electron-emitting substance.

Aluminosilicates of other compositions have low electron emissive activity, so they cannot be used as emissive properties. Chemical pK of refractory metals contained in
It also depends on F.

The following metals, Ni, Zr, Hf, Ta, N
b, Re, M.

and W are divided into three categories. The most active metals are Ni, Zr and Hf, followed by Ta,
Nb and Re, and finally Mo and W.

Results and results 7:', i< 1 is a sintered body or j'J:! from the nickel group. It is most effective to include selected gold 4.d, which has a sintered body containing selected metals from tantalum AT! j'%,, h Better than 1. However, a selection from the tantalum group is more effective than a cathode having a sintered body containing a metal selected from the molybdenum group.

The sintered body contains 85% by weight of nickel and 15% by weight of cesium aluminosilicate, and the salt composition is 0820A120.
In the case of a cathode consisting of a material that is 32S102,
It has the highest release capacity.

85% nickel and 1% rubidium aluminosilicate
5% by weight, and the salt composition is Rb20A1□032S
A cathode made of a sintered body of iO2 has a rather high emission capacity.

Although the cathode 1 containing rubidium aluminosilicate has inferior emission capacity than the cathode 1 containing cesium aluminosilicate, rubidium is preferred over cesium in some cases because it is a cheaper and more readily available material.

Cathode 1 whose sintered body contains 2 and Kel has an emission current of 80
It can be advantageously used in gas discharge tubes that do not exceed OA. If the emission current is higher than this, the nickel is rapidly splattered. The cathode for the sieve output gas discharge 'i'i' should be a sintered body containing 1% of tantalum or molybdenum. +1 is a distribution (point is much higher than nickel).

In such a cathode, the cathode 1 made of a sintered body containing % tantalum 9 Q iR and 10% by weight cesium aluminosilicate and having a composition of C820Al2O,2Siθ2 has a high emission ability. .

The sintered body of the cathode 1 is made of an alloy made of these metals, with an equal weight ratio of 6' metal atoms.
14. It can contain a mixture of gold λ・, (.

The efficiency of the cathode depends on the most active metal in the mixture. Such a cathode can therefore have a high emission Ig approximately equal to the emission 15H of the most effective nickel-containing cathodes. This increases the resistance to Hf1j+ ions and town pairs at 1t and 9. For this purpose, the sintered body should contain a mixture of metals selected from the group of nickel, the gold being a metal with a melting point M higher than that of nickel-zirconium or hafnium, and i from the group of tantalum or molybdenum, for example. selected gold i1
(It is preferable to use a mixture of

Among these, the most preferable one is that the sintered body is a mixture of zirconium and niobium in a weight ratio of 1S1 at 90% by weight.
and 10% by weight of cesium aluminosilicate, and the salt composition is 0s20 A12032SiO2.

This cathode has a high emissivity and is more resistant to ion bombardment than a nickel-containing sintered cathode. Furthermore, since the zirconium-niobium mixture has greater plasticity than nickel, the cathode can be easily manufactured.

The cathode 1 (FIG. 2) according to the invention can be advantageously used in a gas discharge tube, in which the discharge tube (H is filled with an ionized gas, e.g. Two electrodes, namely cathode 1 and anode 3, are arranged fR.
do. The cathode 1 is attached to a support 4. The outer surface of I#2 is covered with a transparent conductor (not shown).

A special example of this discharge tube is a flash gas tube. However, cathodes can be used in gas discharge arresters and vacuum tubes.

/ Doda L Akira's B3. l,'J,: can be formed in any size and shape. for example&
J 11￥1 and a cylinder as shown in FIG. 21, but in the shape of a disk, bow or sphere, and by a known compression molding method, a fire-resistant modern or mixture thereof and 7i, i: child release.゛Cold Q2. ) ): Shape and sinter in vacuum or in a protective atmosphere.

This compression molding will vary depending on the characteristics of the mixture, but generally does not exceed 10 T/7. The degree of sintering fbs varies between i,ooo and 2,0OOK depending on the components of the mixture.

Next, an actual ifiM example will be shown in order to deepen the solution A of the present invention.

Example F#ILIIi 1 (Fig. 1) A sintered body containing 99.5% Ni forged and 1% 0B20AI O2SiO20.5, and was manufactured as follows.

The A-minute powder 2, chlorine and cesium aluminosilicate salt had the above composition, and were mixed in the above weight ratio. The compression molded body is heated to a temperature of 10 in a vacuum with a pressure of about 101i101iI.
It was baked for 10 minutes at 0DK.

The emission current of the cathode 1 manufactured in this way was 0.6 mA/
d, the effective working numerical aperture ψ=0.89 eV. The measurement was carried out at a pressure of 10-8 to 10-9 m+iH7 (D vacuum, with the temperature of the cathode in the room t=<3oox>, vtsvsrtE=2
It was measured as ×10′ V/am. The effective cathode production function is the electron emission constant A = 12 Q A/crd - de of the R1ahar4aon-Dushman equation.
It was gr2. This emission parameter did not change in terms of actual Tt even when the cathode temperature reached 700K.

Cathodes 1 having different compositions of sintered bodies were manufactured using different compression pressures, firing temperatures and periods from the above methods.

Example 2 N185 Jusha% and 0s20 Al2O, 2s1o21
Example 1
It was manufactured in the same manner. Here the compression pressure is 5 T/c
The 71s lighting temperature was set to 1300 and lasted for 60 minutes.

The cathode 1 manufactured as described above has an emitted a8 current of 101
, 6 mA/cIjf, and the effective number of working flashes ψ=0
．． It was 67oV. The measurement conditions were the same as in Example 1.

4J7 Il・μm・]filtration N185% by weight and Rb20A12032S10215
Weight ("1:%"), t, the cathode 1 of the body
Same as ie111 (hard, tel l1ijJ i'>L
Ta. t4A +>21E Force ii 5 T /Cil
+, Baking r'a rV: Hold 130DK for 25 minutes♀4'
d0 In this way, 5 units were made (the metal frame 1 has an emission current of 76
It was 5mA/ad. Its effective work function ψ=
072e'V, 1 acclimatization conditions were the same as in Example 1.

;1 also M:i Example 4 1;'Jhj 1 is Zr75'iiK@% and Rb20
A1203S10225 Heavy 11. A sintered body containing: The compression pressure was 7T/go and the firing temperature was maintained at t50'OK for 50 minutes.

The cathode left in this way emits 1: the current is 4 mA/
~, then the attack i [the constant conditions were the same as the actual Mjj example 10
Mikaru 1si 1i5 Hf 90 'I'l sunny% and 3Rb202A1203
6S10210ii'r, jjj% fAmuguH'
p, #, jr body cathode 1 'IJ' 1flij Example 1
Similarly, i! +! Built. Compression pressure is 6T/cr!
The calcination temperature was maintained at 1,200 K for 20 minutes.

The cathode produced as described above is
At a tu current of 6.9 mA/7, the strength of the electric field is E-
It was 1.5×10 y/ii.

Example 6 A mixture of Zr and Hf (1:2) by weight (99.5
R: ht% and Rb2O・Al2O3・2SiO20
, 5% by weight, was manufactured in the same manner as in Example 1. The compression pressure was 3 T/csd, and the sintering temperature was J¥1000K for 10 minutes.

The cathode had an emission current of 0.2 mA/m, and the +ijσ constant conditions were the same as in Example 1.

Miyagata Ton Example 7 99.5% by weight of Nb and C820・Al2O3・2Si
Cathode 1, which is a sintered body containing 0.5% O2, was produced in the same manner as in Example 1. The compression pressure was 4T/7 and the sintering humidity was maintained at 1.100 K for 8 minutes.

The emission current of the cathode was Q, 2 mA/Cnf, and the measurement conditions were the same as in Example 1.

', j7: l/'ii Example 8 Place 9071'I' jA% and 082o-A12o3
．． Cathode 1, which is a sintered body containing 2S10210jr (1%), was manufactured at the same 44 as in Example 1. The compression pressure was 6T/CI!, and the firing temperature fcr: t 5 o OK was maintained for 10 minutes.

Emission of f〈Ire, M is 30.5 mA,
/ crd, effective work 13': %ψ= 0.7
5 eV, and the measurement conditions were the same as in Example 1.

Example 9 Rθ90%8.2Rb20. Al,,03・5Si
Cathode 1 which is a sintered body containing O210i11 (4i:%)
I actually made 1i example 1 and prtJ 4th, and 5th one.

The compression pressure is 6T/7, and the sintering pressure is 1.300
K was maintained for 10 minutes.

[The pigeon powder discharge rj,'j', the flow was 72 mA/C3,y, and the measurement conditions were the same as in Example 1.

HC1ρ) Example 10 Mixture of Ta and Re in a weight ratio of 1:1 90'ii
Y l'C% and 20B 0 AI O5sio21o
Inno Hi 1, which is a 223 explosive body containing 2 23% of tu, was produced in the same manner as in Example 1. FE shrink power is 6T/c-, firing level 1.30
0K was maintained for 10 minutes.

The emission current of the cathode is 'electric field strength E=1.5X10'v/
9.3 mA/cI at room temperature in rym! Met.

Example 90 8% by weight mixture containing Zr and Nb in a weight ratio of 1:1
and 0s20 A12032Si0210 T'jif
One cathode 1, which is a sintered body containing f1%, was manufactured in the same manner as in Example 1. The compression pressure was 5 T/crl, and the firing temperature was maintained at 1,300 K for 10 minutes.

The emission current of the cathode is 80mA/7, and the effective output voltage is ψ−0.
．． 71 eV, and the measurement conditions were the same as in Example 1 of P11.

Example 12 Mo90Iirtjt% and 30820A12o36S
A cathode 1 made of a sintered body containing 1o210% by market weight was prepared as follows.

85.5% by weight of powdered molybdenum, 8% by weight of 95% cesium aluminosilicate having the above composition, and 5% by weight of Bolivi::Rual alcohol were mixed. Polyvinyl alcohol is a plasticizer to facilitate compaction and firing. This mixture was crushed and then compressed at a pressure of 8 T/crA. Next, vacuum 10 mMH, q.

The compressed body was fired at 1,400 K for 15 minutes.

The emission current of the cathode is the relaxation of the electric field E=1.5×104V/
att was 0.31 mA/cr/L at room temperature.

Example 16 W 7 5 tQ 11% and 2CjB
The shade of the sintered body containing 25% by weight of O2Al 2035SiO2'$I! 1 was produced as follows.

A mixture containing 71.251 m% of tungsten (1 m%, 23.75 m% of cesium aluminosilicate, and 5% of polyvinyl alcohol was prepared using an AT.
' mra H, q, firing temperature Jg 1.8 [10K
lasted for 20 minutes.

Cathode emission 't (j flow J at 0.11 mA/cm,
The measurement conditions are real! It was the same as Example 12.

Example: The weight of Mo and Ta is 90% by weight in a mixture with a ratio of 1:2;
C820A1203SiO2 was manufactured in the same manner as in Example 1 to produce a cathode 1 of a radiation feeder containing 10% of the weight. Compression pressure is 6T
/cd and a calcination temperature of 1.300 K was maintained for 10 minutes.

The emission current of the cathode was 177 mA/crI, and the measurement conditions were the same as in Example 1.

Example 15 90% by weight of a mixture of Hf and Mo in a weight ratio of 1:2;
A cathode 1, which is a sintered body containing 10% by weight of 2Rb202A12035S102, was prepared in the same manner as in Example 1.

The compression pressure was 5T/cd, and the firing temperature was 1.500K at 20
Lasted for minutes. The emission current of the cathode is 4.5 mA/d,
The sample conditions were the same as in Example 12.

The cathode prepared in a manner similar to Example 2 is useful for use in second class gas discharge tubes, especially flash pulp.

However, the gas discharge tube of the present invention could usefully use any of the above cathodes.

A gas discharge tube using cathode 1 was operated as follows.

The gas in tube 2 was previously ionized in a known manner. In particular, a discharge initiation pulse of sufficient voltage to ionize the tube's transparent 'J! 1. added to the sexual allowance.

Furthermore, a voltage consisting of a pulse equal to the discharge (i (1 start ＼ C pressure): i or m R: i R exceeding this was applied to the cathode 1 and the lt field a! ij 3. Application t
The positive pressure caused a 1°1°C droplet to be emitted from the cathode, causing a discharge between the electrodes, which produced a powerful luminescent radiation, that is, a flash.

In this proposed release tube, the initial pressure and its initial pressure were changed together with the number of ζ forces in 11 of the present invention.As a result, the cathode The smaller the function, the lower the electrical 9'F characteristic of the discharge.

When the discharge starting voltage of the discharge tube and the operating pressure are increased, the heat load on the cathode is reduced during the weight operation.

In summary, the electrical characteristics of the gas discharger depend on the number of 1('λ) poles used in the tube.

The above fruit! In an example, the cathode of the present invention has a function of less than 1 e'V at room temperature, and has a high output power. This is because the electron-emitting properties of cesium or rubidium aluminosilicate are approximately 1 eV.
This is due to the presence of ions of alkali metals, namely cesium or rubidium. It is distributed,
It is held in place by its electrostatic force. The low evaporation of alkali metals, cesium or rubidium, from the cathode contributes to stabilizing the emission characteristics of the cathode over long periods of time, and generally extends the life of gas discharge tubes using such cathodes. are doing.

One special embodiment of the gas discharge tube of the invention is a pulsed gas discharge tube for a flash bulb with a flash energy of 15 J. This discharge tube has an inner diameter of 2 mm.

The distance between the cathode 1 and the anode J13 is 16 volumes, and this space is filled with ionized xenon at a pressure of 600 mmmg.

The cathode 1 was manufactured in the same manner as in Example 2, and its outer diameter was 1.
It was 5 mm.

2nd discharge is discharge start voltage 180■, discharge start pulse;
IJ, FE4. sKV, operating voltage 200V, M'FM
The N flow was 500A. 40. These properties remained virtually unchanged after flashing DOO[ilJ.

Another feature of the discharge tube is that the flash energy is 40. There is a T pulse gas discharge tube.

The inner diameter of this tube 1.a was 6.2 +++i, the diameter of the cathode 1 and the anode 3 was 30 nm, and it was filled with ionized gas, ie, xenon, at a pressure of 230 to 250 m1Hy.

11 Mipole 1 was manufactured in the same manner as in Example 2, and had an outer diameter of 2,
It was 41111A.

This discharge tube has discharge αtMi4 starting voltage 8ov1 discharge starting pulse 7, ii7 pressure '5'X', l+operating voltage 11
07. The FG115 current was 500A. 40.000
These characteristic values did not change substantially after multiple flashes.

The advantage of the cathode of the present invention is that it has a very low work function, with ψ=0.6-0.9 eV at room temperature.

This reduces the current emitted from the cathode to 100 mA/d when the electric field strength is 2 x 10'v/polarized Jli-'
I was able to do f6.

Another advantage of this cathode is its very low resistance to the ions nU98. For example, if this cathode is used in a gas discharge tube, the ionized gas pressure will be approximately /)001+
1lIH! Even as high as 1, the release capacity remains unchanged from the initial value after 40,000 flashes. Deterioration of the cathode was only noticeable after 65,000 flashes. Of particular note is that the sintered body of this cathode contains 85-90% Niracle, which is the most easily sputtered metal used in the sintered cathode. Other high melting point metals include tantalum, tungsten, etc., but when these are used in the composition of the sintered body of the cathode, the resistance of this cathode to ions W9J increases significantly.

The above-mentioned benefits of the cathode, when used in gas discharge tubes, allow the operating specs to be kept high. For example, if the amount of light emitted is large,
Low discharge starting voltage, small size, and long life. For example, the pulse gas discharge tube of the present invention has a flash energy of 15. r, the discharge IE4 starting voltage is 80V, the diameter of the light emitting part Z+1 is 15 cm, and the life span is 40.
OO' More than 0 flashes.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of the cathode of the present invention, and FIG.
FIG. 2 is a longitudinal cross-sectional view of a gas outlet 'n', j tube according to the invention with the cathode shown in the figure; 1...Cathode, 2...Tube, 3...Anode, 4...Support Patent Applicant IOB Institute Radiotechniki Ielectroniki Academy Nauk SSSR Patent Attorney Akira Aoki Patent Attorney Kazuyuki Nishidate Patent Attorney Temple 1) Yutaka Patent Attorney Akiyuki Yamaguchi Continued from page 1 0 Inventor Pronislava Samoilovna Krupalskaya Soviet Union Moscow Ulitsa Baikalskaya 23 Kwarchila 61 0 Inventor Vladimir Ivanovich Teimovev Soviet Union Moscow Corps 1004 Kwarchila 335

Claims (1)

[Claims] 1. A cathode made of a sintered body containing a refractory metal or a mixture thereof and an electron-emitting timber (1), wherein the electron-emitting side slopes are made of cesium or rubidium aluminosilicate. Contains a cathode with all R# characteristics. 2. The cathode according to claim 1, wherein the square 4 solids contain 10.5 to 25% by weight of aluminosilicon rI9 Jζ of cesium or rubidium, and the remainder is a refractory gold halo or a mixture thereof. 6. Cesium Take Rubidium Aluminium 1 and 2
Jbu (is the formula XM2O・7A1203・zsio2 (in the formula, ?+4
is O8 or R'b, X-1 to 3, y-1 to 2, z = 1 to 6). 4- The coal body contains nickel, /I/85% by weight, At% and 15% by weight of cesium aluminosilicate;
The cathode according to claim M1g3, wherein the composition corresponds to the formula: 0820.At203.2S202. 5. The sintered body contains 85% nickel and rubidium aluminosilicate, and the composition of this salt is of the formula Rb2O・At
203.2S102, the cathode according to claim 3. 6. The sintered body contains 90% by weight of tantalum and 10% by weight of cesium aluminosilicate, and the composition of this salt corresponds to the formula 0s20 #hL2o3・2SiO2.
A cathode according to claim 3. 2 The sintered body contains 90% by weight of a 1:1 mixture of zirconium and niobium and 10% by weight of cesium aluminosilicate.
and the composition of this salt has the formula 0s20, At203
-2SiO3 cathode according to claim 6. 8. Gas discharge '1 (τ
tube, one electrode is made of a sintered body containing refractory gold: f4 or a mixture thereof and an 'i'it electron emitting material, ffj, the electron emitting material is cesium or rubidium amino acid; Ji43ij+ including Kei (:f':>M
: A gas discharge tube with qν6.