公开(公告)号：US3891475A

公开(公告)日：1975-06-24

申请号：US35446773

申请日：1973-04-25

Applicant: HITACHI LTD

Inventor： TOMITA SADAMI ,  CHIBA AKIO ,  MIYAJIMA GOH

IPC: C22C19/07 ,  C22C38/00 ,  C22C38/10 ,  H01F1/14 ,  H01F1/147 ,  C04B35/00

CPC classification number: C22C19/07 ,  C22C38/10 ,  H01F1/147

Abstract: A strong and uniform magnetic field is required at the magnetic gap of magnetic circuits in an analyzing apparatus such as a nuclear magnetic resonance apparatus. The addition of 0.15-0.5 percent carbon to a 35-55 percent co-containing iron-cobalt soft magnetic alloy which is used as a pole piece incorporated into the circuits can result in fine crystal structures without the strong magnetic performance harmed, so that a strong and uniform magnetic field is obtained.

Abstract translation: 在诸如核磁共振装置的分析装置中，在磁路的磁隙处需要强而均匀的磁场。 在35-55％的含钴铁磁软磁合金中加入0.15-0.5％的碳，作为结合在电路中的极片，可以产生精细的晶体结构，而没有强磁性能受损，因此， 得到强而均匀的磁场。

公开(公告)号：US3898501A

公开(公告)日：1975-08-05

申请号：US46852874

申请日：1974-05-09

Applicant: HITACHI LTD

Inventor： HOSOYA AKIRA ,  TADOKORO MAKOTO ,  TOMITA SADAMI ,  ARAI YOJI ,  MAYAMA SHINJI

IPC: H01J61/09 ,  G01N21/01 ,  H01J17/06 ,  H01J61/08

CPC classification number: H01J17/066 ,  H01J2893/0066

Abstract: In a lamp used as light source for atomic light absorption analysis, comprising a cathode having a hollow therein, an anode disposed in the vicinity thereof, a hermetical envelope to enclose the cathode and the anode, and gaseous atmosphere contained in envelope, the cathode is formed of an alloy composed of silver and at least one metal having a melting point equal to or lower than 500*C and emitting the same spectral line as the metal to be analyzed so that the cathode is prevented from being deformed and the luminous intensity and the analytic accuracy are improved.

Abstract translation: 在用作原子光吸收分析的光源的灯中，包括其中具有中空的阴极，设置在其附近的阳极，包围阴极和阳极的气密外壳以及包封在气体中的气体，阴极是 由银和至少一种熔点等于或低于500℃的金属组成的合金形成，并且发射与待分析的金属相同的光谱线，从而防止阴极变形，并且发光强度和 分析精度提高。

公开(公告)号：US3623136A

公开(公告)日：1971-11-23

申请号：US3623136D

申请日：1969-05-07

Applicant: HITACHI LTD

Inventor： TOMITA SADAMI ,  HOSOYA AKIRA ,  OKAGAKI HIROSHI

IPC: G01J3/10 ,  H01J17/06 ,  G01J3/12 ,  H01J61/08

CPC classification number: G01J3/10 ,  H01J17/066 ,  H01J2893/0066

Abstract: A light source lamp for atomic light-absorption analysis comprising a structure constituted by a molded body of fine metal wires having a relatively high-melting-point which are mechanically closely linked with each other having a metal having a relatively low-melting-point impregnated in the gaps between the fine wires, wherein the metal of a low-melting-point is continuously fed to a hollow portion through the gaps between the fine wires while maintaining the contour of the structure by virtue of the frame composed of the fine metal wires of a highmelting-point, thereby making it possible to produce a high light-intensity resonance line of the low-melting-point metal which is stabilized for a long time.

公开(公告)号：US3615910A

公开(公告)日：1971-10-26

申请号：US3615910D

申请日：1967-12-28

Applicant: HITACHI LTD

Inventor： TOMITA SADAMI ,  OOUCHI HIROYUKI

IPC: C22C19/00 ,  H01F1/14 ,  H01F3/02

CPC classification number: C22C19/00

Abstract: A magnetic alloy consisting essentially of less than 30 weight percent of cobalt, less than 30 weight percent of iron, less than 5 weight percent of a metal selected from the group consisting of copper and molybdenum, and the balance being essentially nickel and cores made therewith. The alloy has a Curie point greater than 620* C. and excellent rectangular hysteresis loop characteristics, such as, a Br/B10 value greater than about 90 percent.