Title:
SONDE FOR INTRODUCTION INTO BORING PIT FOR PURPOSE OF DETECTION OF MINERAL DEPOSIT
Document Type and Number:
Japanese Patent JPS59197882
Kind Code:
A
Abstract:
1. Probe (1) for being introduced into a borehole (3) for the exploration of or deposits, comprising a cylindrical housing (4), in which are concentrically arranged a radioactive radiation source (5) and a detector (17) shielded with respect to the radiation source by a screen (7, 8) for the detection of fluorescence radiation induced by the radioactive radiation in the vicinity of the borehole, characterized in that the screen (7, 8) for forming an irradiated ring (12) on the wall (2) of the borehole (3) forms a slot (6) disposed perpendicularly of the axis of the probe (1) and extending as far as the inside wall of the housing (4), which slot is defined by disc-like surfaces adjusted in their mutual spacing.
Inventors:
KURAUSU YANSEN
HERUMUUTO BUINNATSUKAA
KURAUSU YOONEN
HERUMUUTO BUINNATSUKAA
KURAUSU YOONEN
Application Number:
JP6783984A
Publication Date:
November 09, 1984
Filing Date:
April 06, 1984
Export Citation:
Assignee:
PUROISAKU AG METARU
International Classes:
G01V5/04; G01V5/12; G01V5/14; E21B47/00; (IPC1-7): E21B49/00; G01V5/04
Foreign References:
| US3061725A | 1962-10-30 | |||
| US3404275A | 1968-10-01 |
Attorney, Agent or Firm:
Toshio Yano
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