DETECTOR STAND AND X-RAY DIFFRACTION APPARATUS

A detector stand for an X-ray detector is provided. A first arrangement portion arranges the X-ray detector in first orientation. A second arrangement portion arranges the X-ray detector in second orientation. The X-ray detector can be fixed to a mounting portion. In the detector stand, the X-ray detector is selectively mountable on the first arrangement portion or the second arrangement portion through the mounting portion. An arrangement angle of the X-ray detector fixed to the mounting portion is different between the first orientation and the second orientation.

CROSS-REFERENCE TO RELATED APPLICATION

This patent application is based on and claims priority to Japanese Patent Application No. 2023-012826, filed on Jan. 31, 2023 in the Japan Patent Office, the entire disclosure of which is incorporated by reference herein.

BACKGROUND OF THE INVENTION

Field of the Invention

The present invention relates to a detector stand and an X-ray diffractometer.

Description of the Related Art

As an X-ray detector, a two-dimensional detector in which an aspect ratio of a detection range is not 1 is known (for example, Rigaku Journal, Winter 2016, Volume 32, No. 1, 2016, pp. 3-9). Such a detector can acquire profiles of different ranges depending on arrangement of the detector. For example, in a case where the detector is arranged such that a detection surface is laterally long, the detector can measure a range relatively wide in an in-plane direction (β direction). In contrast, in a case where the detector is arranged such that the detection surface is vertically long, the detector can measure a range relatively wide in an out-plane direction (2θ direction).

SUMMARY OF THE INVENTION

According to an embodiment of the present invention, there is provided a detector stand for an X-ray detector, comprising: a first arrangement portion configured to arrange the X-ray detector in first orientation: a second arrangement portion configured to arrange the X-ray detector in second orientation: and a mounting portion to which the X-ray detector can be fixed, wherein in the detector stand, the X-ray detector is selectively mountable on the first arrangement portion or the second arrangement portion through the mounting portion, and an arrangement angle of the X-ray detector fixed to the mounting portion is different between the first orientation and the second orientation.

According to another embodiment of the present invention, there is provided an X-ray diffractometers, comprising: an X-ray detector: and the detector stand above.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

In measurement by the detector as described above, a user or the like mounts the detector on a goniometer by using a stand in some cases. In a case where the detector is mounted on the goniometer by using different stands corresponding to respective arrangements, it is necessary to mount the detector on a corresponding one of the different stands every time the arrangement is changed over, and it takes time to change over the arrangement.

An embodiment provides a technique for easily changing arrangement of a two-dimensional detector as compared with the existing technique.

FIG.1is a perspective view illustrating an outline of a detector stand1.FIG.1illustrates a state where an X-ray detector100is installed on the detector stand1. The X-ray detector100is a pixel detector that can perform two-dimensional measurement. In the present embodiment, the X-ray detector100is a detector in which an aspect ratio (in this example, indicating ratio of lateral length to longitudinal length) of a detection region is not 1. In other words, the X-ray detector100includes a detection surface110defining the detection region where an X-ray is detected. The detection surface110has a rectangular shape in which the longitudinal length and the lateral length are different from each other. The aspect ratio of the detection region may be, for example, 1.1 or more, 1.2 or more, 1.5 or more, 2 or more, 3 or more, 4 or more, or 5 or more. The X-ray detector100may be able to perform zero-dimensional or one-dimensional measurement.

FIG.2is a front view of the detector stand1,FIG.3is a side view of the detector stand1, andFIG.4is a plan view of the detector stand1.

The detector stand1supports the X-ray detector100. The detector stand1includes a landscape arrangement portion10, a portrait arrangement portion20, a mounting portion30, and an adjustment portion40. These portions are described below. The detector stand1further includes a coupling portion60to be coupled to the goniometer to enable adjustment of a distance between the X-ray detector100and a detection object.

Next, two arrangement portions (landscape arrangement portion10and portrait arrangement portion20) provided on the detector stand1are described.

The landscape arrangement portion10supports the X-ray detector100in landscape orientation. More specifically, when the mounting portion30to which the X-ray detector100has been fixed is mounted on the landscape arrangement portion10, the landscape arrangement portion10supports the X-ray detector100in the landscape orientation. In the following, arrangement in which the mounting portion30is mounted on the landscape arrangement portion10, namely, arrangement in which the X-ray detector100is supported by the landscape arrangement portion10through the mounting portion30is referred to as landscape orientation. In the landscape orientation, a width direction of the X-ray detector100extends in a lateral direction (horizontal direction). In the present embodiment, the width direction of the X-ray detector100corresponds to a long-side direction of the detection surface110. The landscape arrangement portion10includes an arrangement surface11, an XZ-direction regulation portion12, a holding portion13, and a Y-direction regulation portion15.

The mounting portion30is disposed on the arrangement surface11. In the present embodiment, the arrangement surface11is a surface extending on a horizontal plane (XY plane). The arrangement surface11may not be a plane surface. The XZ-direction regulation portion12regulates relative positions of the mounting portion30and the landscape arrangement portion10. In this example, the XZ-direction regulation portion12regulates the relative positions of the mounting portion30and the landscape arrangement portion10in an X direction and a Z direction. The XZ-direction regulation portion12is a wall portion extending at least upward from the arrangement surface11. The Y-direction regulation portion15regulates relative positions of the mounting portion30and the landscape arrangement portion10in a Y direction. In the present embodiment, the Y-direction regulation portion15is a plate-like member disposed so as to abut on a mounting member31when the mounting portion30is disposed on the landscape arrangement portion10. However, the shape and the like of the Y-direction regulation portion15can be appropriately changed. Note that, in this example, the XZ-direction regulation portion12as the wall portion regulates the relative positions of the mounting portion30and the landscape arrangement portion10in the X direction and the Z direction: however, regulation of the relative positions in the X direction and regulation of the relative positions in the Z direction may be performed by different members. Alternatively, the XZ-direction regulation portion12and the Y-diction regulation portion15may be configured by the same member, or regulation of the relative positions in one of the X direction and the Z direction and regulation of the relative positions in the Y direction may be performed by the same member.

The holding portion13holds a position of the mounting portion30in a state where the relative positions of the mounting portion30and the landscape arrangement portion10are regulated by the XZ-direction regulation portion12. The holding portion13includes an abutting portion13a, a moving mechanism13b, and a handle13c. The abutting portion13aabuts on the mounting portion30. The moving mechanism13bretractably moves the abutting portion13ato the mounting portion30. The handle13cis to operate the moving mechanism13b. Providing the handle13cenables the user to change over arrangement of the X-ray detector100without a tool. In the present embodiment, the mounting portion30is mounted in a space defined by the arrangement surface11, the XZ-direction regulation portion12, and the abutting portion13a.

The portrait arrangement portion20supports the X-ray detector100in portrait orientation. More specifically, when the mounting portion30to which the X-ray detector100has been fixed is mounted on the portrait arrangement portion20, the portrait arrangement portion20supports the X-ray detector100in the portrait orientation. In the following, arrangement in which the mounting portion30is mounted on the portrait arrangement portion20, namely, arrangement in which the X-ray detector100is supported by the portrait arrangement portion20through the mounting portion30is referred to as portrait orientation. In the portrait orientation, the width direction of the X-ray detector100extends in a longitudinal direction (vertical direction). The portrait arrangement portion20may include a structure similar to the structure of the landscape arrangement portion10. In other words, an arrangement surface21, an XY-direction regulation portion22, and a holding portion23may have structures similar to the structures of the arrangement surface11, the XZ-direction regulation portion12, and the holding portion13, respectively. In the present embodiment, the XZ-direction regulation portion12and the XY-direction regulation portion22have a similar structure: however, the regulation direction of the relative position with the mounting portion30is different between the XZ-direction regulation portion12and the XY-direction regulation portion22because of a difference of an arrangement angle. Further, an abutting portion23a, a moving mechanism23b, and a handle23cthat are components of the holding portion23may also have structures similar to the structures of the abutting portion13a, the moving mechanism13b, and the handle13cthat are components of the holding portion13. Accordingly, description of the components of the portrait arrangement portion20is omitted.

In the present embodiment, the portrait arrangement portion20includes a Z-direction regulation portion25as a component corresponding to the Y-direction regulation portion15of the landscape arrangement portion10. In the portrait arrangement portion20, the XY-direction regulation portion22regulates relative positions of the mounting portion30and the portrait arrangement portion20in the X direction and the Y direction, and the Z-direction regulation portion25regulates the positions of the mounting portion30and the portrait arrangement portion20in the Z direction. The Z-direction regulation portion25is a block-like member provided on a lower side of the arrangement surface21. The shape and the like of the Z-direction regulation portion25can be appropriately changed.

The X-ray detector100can be fixed to the mounting portion30. In the detector stand1, the X-ray detector100is selectively mountable on the landscape arrangement portion10or the portrait arrangement portion20through the mounting portion30. The mounting portion30includes the mounting member31detachably mounted on the landscape arrangement portion10and the portrait arrangement portion20, and a fixing portion32to which the X-ray detector100is fixed.

The mounting member31is a member slidable to each of the landscape arrangement portion10and the portrait arrangement portion20. For example, the mounting member31has a shape complementary to a space formed in each of the landscape arrangement portion10and the portrait arrangement portion20. Accordingly, the mounting member31is movable in the Y direction, but movement of the mounting member31in the ZX direction is regulated, relative to the landscape arrangement portion10. Furthermore, the mounting member31is movable in the Z direction, but movement of the mounting member31in the XY direction is regulated, relative to the portrait arrangement portion20.

For example, the fixing portion32includes a plurality of bolt holes32aprovided at positions corresponding to positions of a plurality of bolt holes (not illustrated) provided on a bottom surface of the X-ray detector100. The fixing portion32can fix the X-ray detector100to the mounting member31through bolt fastening.

FIG.5AtoFIG.5Care explanatory diagrams illustrating mounting operation of the mounting portion30. In this example, a case where the mounting portion30is mounted on the landscape arrangement portion10is described: however, the mounting portion30is mounted on the portrait arrangement portion20in a similar manner. Accordingly, description about the portrait arrangement portion20is omitted. In addition, illustration of some components is omitted for facilitating visualization.

FIG.5Aillustrates a state of the landscape arrangement portion10before the mounting portion30is mounted.FIG.5Billustrates a state in the middle of mounting the mounting portion30on the landscape arrangement portion10. At this time, the mounting portion30slides in a −Y direction relative to the landscape arrangement portion10.FIG.5Cillustrates a state where the mounting portion30is mounted and is then held by the holding portion13. The user operates the handle13cto cause the abutting portion13ato abut on the mounting portion30. As a result, the mounting portion30is fixed to the landscape arrangement portion10.

Further, at this time, the position of the mounting portion30in the X direction and the Z direction is regulated by abutment with the XZ-direction regulation portion12(seeFIG.3). Further, the position of the mounting portion30in the Y direction is regulated by abutment with the Y-direction regulation portion15. Accordingly, for example, even in a case where the mounting portion30is mounted on the portrait arrangement portion20from the landscape arrangement portion10, and is then mounted on the landscape arrangement portion10again, the position of the mounting portion30is reproduced with high accuracy by the XZ-direction regulation portion12and the Y-direction regulation portion15. Thus, when the position of the mounting portion30to the landscape arrangement portion10is adjusted by the adjustment portion40described below, subsequent positional adjustment after changeover of arrangement of the X-ray detector100is unnecessary. This makes it possible to efficiently change over the arrangement of the X-ray detector100as compared with the existing technique.

In the case of the portrait orientation, the position of the mounting portion30in the X direction and the Z direction is regulated by abutment of the mounting member31and the XY-direction regulation portion22, and the position of the mounting portion30in the Z direction is regulated by abutment of the mounting member31and the Z-direction regulation portion25.

FIG.6AandFIG.6Bare diagrams illustrating a difference of the arrangement angle between the case where the mounting portion30is mounted on the landscape arrangement portion10and the case where the mounting portion30is mounted on the portrait arrangement portion20. In the present embodiment, the arrangement angle of the X-ray detector100fixed to the mounting portion30is different between the landscape orientation (FIG.6A) in which the mounting portion30is mounted on the landscape arrangement portion10and the portrait orientation (FIG.6B) in which the mounting portion30is mounted on the portrait arrangement portion20. More specifically, in the present embodiment, the arrangement angle (tilt angle) around an X axis of the X-ray detector100fixed to the mounting portion30is different by 90 degrees between the portrait orientation and the landscape orientation. Accordingly, profiles of the different ranges can be acquired depending on the case of the landscape orientation of the X-ray detector100or the case of the portrait orientation of the X-ray detector100.

Further, in the present embodiment, since the detector stand1includes the landscape arrangement portion10and the portrait arrangement portion20, the X-ray detector100can be placed in the landscape orientation and in the portrait orientation by using only one detector stand1. In contrast, for example, in a case where a stand for landscape orientation and a stand for portrait orientation are separately prepared, it is necessary to demount the stand from the goniometer every time the arrangement is changed over. Thus, it may take time to change over the arrangement. Further, when the stand is demounted from the goniometer, positioning with high accuracy may become necessary. On the other hand, in the present embodiment, changeover between the landscape orientation and the portrait orientation is performable in a state where the detector stand1itself is coupled to the goniometer, which makes it possible to facilitate changeover of the arrangement as compared with the existing technique.

In the present embodiment, the arrangement angle (tilt angle) around the X axis of the X-ray detector100fixed to the mounting portion30is different by 90 degrees between the landscape orientation and the portrait orientation: however, the difference of the arrangement angle is not limited to 90 degrees, and may be an angle within a predetermined range including 90 degrees. The predetermined range may be, for example, a range from 89 degrees to 91 degrees, a range from 88 degrees to 92 degrees, a range from 85 degrees to 95 degrees, or a range from 80 degrees to 100 degrees.

FIG.7Ais a diagram illustrating a detection region in the landscape orientation, andFIG.7Bis a diagram illustrating the detection region in the portrait orientation. In the case of the landscape orientation, a range wide in an in-plane direction (B direction) can be measured. In this case, the X-ray detector100can measure a diffraction image called a Debye ring within a range longer in a circumferential direction. Examples of measurement effectively performed in the landscape orientation include rocking curve measurement, and measurement for evaluation of an orientation state.

In contrast, in the case of the portrait orientation, a range wide in an out-plane direction (2θ direction) can be measured. In this case, a diffraction image that cannot be detected by measurement in the landscape orientation can be detected. Examples of measurement effectively performed in the portrait orientation include in-situ measurement (charge/discharge measurement, high-temperature measurement), and mapping measurement of a micro area that requires measurement in a short time.

As described above, the user can obtain more appropriate measurement result by selecting whether the measurement is performed in the landscape orientation or the portrait orientation based on a purpose of the measurement. Further, as described above, in the present embodiment, changeover between the landscape orientation and the portrait orientation is efficiently performable as compared with the existing technique, which enables the user to more efficiently obtain a more appropriate measurement result.

FIG.8AtoFIG.8Dare explanatory diagrams illustrating influence of positional displacement of the X-ray detector100on a measurement result.FIG.8Aillustrates a measurement result in a state where positional adjustment of the X-ray detector100is correctly performed. In the drawing, an arc-shaped diffraction image is illustrated, and a center of the diffraction image in a peripheral direction is positioned at a center of the detection region. On the other hand, in a case where the measurement is performed in a state where the X-ray detector100is shifted in the lateral direction, the diffraction image is shifted in the lateral direction (FIG.8B). In a case where the measurement is performed in a state where the X-ray detector100is shifted in the longitudinal direction, the diffraction image is shifted in the longitudinal direction (downward direction in this example) (FIG.8C). Further, in a case where the measurement is performed in a state where the X-ray detector100is shifted in a tilt direction, a20angle is different between a left end and a right end of the detection surface (FIG.8D).

As described above, when the measurement is performed in the state where the position of the X-ray detector100is shifted, a desired measurement result may not be obtained. Thus, in the present embodiment, the adjustment portion40performs positional adjustment in each of the landscape orientation and the portrait orientation.

Referring back toFIG.1toFIG.4, the adjustment portion40can perform positional adjustment of three axes of the X-ray detector100in the landscape orientation and positional adjustment of three axes of the X-ray detector100in the portrait orientation. In the present embodiment, the adjustment portion40includes a landscape adjustment portion41and a portrait adjustment portion42.

The landscape adjustment portion41adjusts arrangement of the X-ray detector100in the landscape orientation. The landscape adjustment portion41includes a Y-axis adjustment mechanism41a, a Z-axis adjustment mechanism41b, and an X-axis rotation adjustment mechanism41c. The landscape adjustment portion41can adjust the three axes of the X-ray detector100in the landscape orientation by using these mechanisms.

The Y-axis adjustment mechanism41ais a mechanism performing positional adjustment of the X-ray detector100in the horizontal direction (Y direction). The Y direction is a direction orthogonal to a detection direction (X direction) of the X-ray detector100. The Z-axis adjustment mechanism41bis a mechanism performing positional adjustment of the X-ray detector100in the vertical direction (Z direction). The Z direction is a direction orthogonal to the detection direction (X direction) of the X-ray detector100and the width direction (Y direction) of the X-ray detector

As a specific structure of each of the Y-axis adjustment mechanism41aand the Z-axis adjustment mechanism41b, a known structure can be appropriately used. For example, the Y-axis adjustment mechanism41aincludes an unmovable part that cannot move, a movable part that can move in the Y direction relative to the unmovable part, and an adjustment part for adjusting a moving amount of the movable part, such as a screw: The Z-axis adjustment mechanism41bincludes an unmovable part that cannot move, a movable part that can move in the Z direction relative to the unmovable part, and an adjustment part for adjusting a moving amount of the movable part, such as a screw. More specifically, a positional adjustment mechanism of a rack and pinion type, a feed screw type such as a ball screw, a push screw type, or the other type can be used for each of the Y-axis adjustment mechanism41aand the Z-axis adjustment mechanism41b.

Note that relationship of the axis adjustable by the Y-axis adjustment mechanism41aand the axis adjustable by the Z-axis adjustment mechanism41bis not limited to the orthogonal relationship. In other words, it is sufficient to arrange the X-ray detector100at a desired position on the YZ plane by the Y-axis adjustment mechanism41aand the Z-axis adjustment mechanism41b, and an angle formed by the two axes may be an angle within a predetermined range. The predetermined range may be, for example, a range from 89 degrees to 91 degrees, a range from 88 degrees to 92 degrees, a range from 85 degrees to 95 degrees, or a range from 80 degrees to 100 degrees.

The X-axis rotation adjustment mechanism41cis a mechanism performing angle adjustment around the axis extending in the detection direction (X direction) of the X-ray detector100. The angle around the axis extending in the X direction is called a tilt angle in some cases. As a specific structure of the X-axis rotation adjustment mechanism41c, a known technique can be appropriately used. For example, the X-axis rotation adjustment mechanism41cincludes an unmovable part that cannot move, a pivotable part that can pivot around the X axis relative to the unmovable part, and an adjustment part for adjusting a pivot amount of the pivotable part, such as a screw.

The portrait adjustment portion42adjusts arrangement of the X-ray detector100in the portrait orientation. The portrait adjustment portion42includes a Y-axis adjustment mechanism42aand a Z-axis adjustment mechanism42b.

The Y-axis adjustment mechanism42ais a mechanism performing positional adjustment of the X-ray detector100in the horizontal direction (Y direction). The Z-axis adjustment mechanism42bis a mechanism performing positional adjustment of the X-ray detector100in the vertical direction (Z direction). For example, the Y-axis adjustment mechanism42aincludes an unmovable part that cannot move, a movable part that can move in the Y direction relative to the unmovable part, and an adjustment part for adjusting a moving amount of the movable part, such as a screw. The Z-axis adjustment mechanism42bincludes an unmovable part that cannot move, a movable part that can move in the Z direction relative to the unmovable part, and an adjustment part for adjusting a moving amount of the movable part, such as a screw. More specifically, a positional adjustment mechanism of a rack and pinion type, a feed screw type such as a ball screw, a push screw type, or the other type can be used for each of the Y-axis adjustment mechanism42aand the Z-axis adjustment mechanism42b.

Note that relationship of the axis adjustable by the Y-axis adjustment mechanism42aand the axis adjustable by the Z-axis adjustment mechanism42bis not limited to the orthogonal relationship. In other words, it is sufficient to arrange the X-ray detector100at a desired position on the YZ plane by the Y-axis adjustment mechanism42aand the Z-axis adjustment mechanism42b, and an angle formed by the two axes may be an angle within a predetermined range. The predetermined range may be, for example, a range from 89 degrees to 91 degrees, a range from 88 degrees to 92 degrees, a range from 85 degrees to 95 degrees, or a range from 80 degrees to 100 degrees.

The arrangement positions of the mechanisms included in the adjustment portion40can be appropriately designed. In the present embodiment, among the mechanisms of the landscape adjustment portion41, the Y-axis adjustment mechanism41ais provided on the landscape arrangement portion10side, and the Z-axis adjustment mechanism41band the X-axis rotation adjustment mechanism41care provided on the mounting portion30side. Further, the Y-axis adjustment mechanism42aand the Z-axis adjustment mechanism42bof the portrait adjustment portion42are provided on the portrait arrangement portion20side.

In the present embodiment, the coupling portion60is provided below the landscape arrangement portion10. Accordingly, providing some of the mechanisms of the landscape adjustment portion41on the mounting portion30side makes it possible to prevent interference with the goniometer on which the detector stand1is mounted.

On the other hand, because of the configuration in which the positional adjustment is performed in the state where the X-ray detector100is fixed to the mounting portion30, a surface of the mounting portion30accessible by a tool during the adjustment is limited. Therefore, in the present embodiment, at least some of the adjustment mechanisms of the landscape adjustment portion41are provided on the landscape arrangement portion10side, and at least some of the adjustment mechanisms of the portrait adjustment portion42are provided on the portrait arrangement portion20side. This prevents deterioration of accessibility of the tool to the adjustment mechanisms.

Alternatively, all of the adjustment mechanisms of the landscape adjustment portion41may be provided on the landscape arrangement portion10side, and all of the adjustment mechanisms of the portrait adjustment portion42may be provided on the portrait arrangement portion20side. In this case, the structure of the mounting portion30side can be simplified. Note that, in this case, a mechanism for adjusting the tilt angle may be provided on the portrait adjustment portion42.

Further alternatively, all of the adjustment mechanisms of one of the landscape adjustment portion41and the portrait adjustment portion42may be provided on the mounting portion30side, and all of the adjustment mechanisms of the other adjustment portion may be provided on the landscape arrangement portion10side or the portrait arrangement portion20side.

In the present embodiment, a mechanism for adjusting the tilt angle is not provided on the portrait adjustment portion42. In the following, adjustment of the tilt angle in the portrait orientation is described.FIG.9AandFIG.9Bare explanatory diagrams illustrating adjustment of the tilt angle in the landscape orientation and the portrait orientation, respectively.

As illustrated inFIG.9A, in a case where the arrangement surface11of the landscape arrangement portion10is installed while being inclined to the horizontal direction, adjustment by using the X-axis rotation adjustment mechanism41cis performed such that the long-side direction of the detection surface110of the X-ray detector100becomes horizontal. At this time, in the present embodiment, the X-axis rotation adjustment mechanism41cis provided on the mounting portion30side. Therefore, even in a case where the X-ray detector100is changed over from the landscape orientation to the portrait orientation, the angle (angle of fixing portion32to arrangement surfaces11and21) adjusted by the X-axis rotation adjustment mechanism41cis maintained. Further, in the present embodiment, the arrangement surface11and the arrangement surface21are provided so as to be orthogonal to each other. Accordingly, when the tilt angle is adjusted such that the long-side direction of the detection surface110becomes horizontal in the landscape orientation, the long-side direction of the detection surface110extends along the vertical direction in the portrait orientation (FIG.9B). In other words, the adjustment of the tilt angle in the landscape orientation is also performed as the adjustment of the tilt angle in the portrait orientation. In a case where the tilt angle is adjusted in the portrait orientation first, the adjustment is also performed as the adjustment of the tilt angle in the landscape orientation.

As described above, the X-axis rotation adjustment mechanism41cof the landscape adjustment portion41is provided on the mounting portion30side, and the arrangement surface11and the arrangement surface21are provided so as to be orthogonal to each other, which makes it possible to omit a tilt angle adjustment mechanism of the portrait adjustment portion42. In this example, the landscape adjustment portion41includes the X-axis rotation adjustment mechanism41c: however, it can be said that the X-axis rotation adjustment mechanism41calso serves as the tilt angle adjustment mechanism of the landscape adjustment portion41and the tilt angle adjustment mechanism of the portrait adjustment portion42. In other words, each of the landscape adjustment portion41and the portrait adjustment portion42can perform adjustment of three axes. The independent mechanisms can be used for adjustment of the two axes (translation in YZ direction), and the common mechanism can be used for adjustment of the tilt angle. In this example, the landscape adjustment portion41includes the X-axis rotation adjustment mechanism41c; however, it can be said that the tilt angle adjustment mechanism of the X-ray detector100is provided separately from the landscape adjustment portion41and the portrait adjustment portion42that perform adjustment in the translation direction.

Further, in the present embodiment, the Y-axis adjustment mechanism41aand the Z-axis adjustment mechanism41bof the landscape adjustment portion41are provided on the landscape arrangement portion10side, and the Y-axis adjustment mechanism42aand the Z-axis adjustment mechanism42bof the portrait adjustment portion42are provided on the portrait arrangement portion20side. This makes it possible to independently maintain the positions after adjustment in the XZ direction in the portrait orientation and the landscape orientation. More specifically, since the Z-axis adjustment mechanism41bis provided on the mounting portion30side, the positional adjustment in the portrait orientation can be performed using the Z-axis adjustment mechanism41bin terms of the structure. However, when the positional adjustment in the portrait orientation is performed by the Z-axis adjustment mechanism42bon the portrait arrangement portion20side, the positions after adjustment in the XZ direction in the portrait orientation and the landscape orientation can be independently maintained. Further, an aspect is not limited to the aspect of the present embodiment, and at least one of the Y-axis adjustment mechanism41aand the Y-axis adjustment mechanism42aand at least one of the Z-axis adjustment mechanism41band the Z-axis adjustment mechanism42bare provided on the landscape arrangement portion10side or the portrait arrangement portion20side, which makes it possible to independently maintain the positions after adjustment in the XZ direction in the portrait orientation and the landscape orientation.

On the other hand, since the X-axis rotation adjustment mechanism41cis provided on the mounting portion30side and the arrangement surface11and the arrangement surface21are provided so as to be orthogonal to each other, the desired tilt angle can be maintained in any of the landscape orientation and the portrait orientation. As a result, even when the arrangement is changed over, the positions after adjustment both in the landscape orientation and the portrait orientation can be maintained. In the present embodiment, the X-axis rotation adjustment mechanism41cis provided on the mounting portion30; however, the tilt angle adjustment mechanism that can adjust the tilt angle by simultaneously rotating the arrangement surface11and the arrangement surface21around the X axis may be provided. In other words, the tilt angle adjustment mechanism that can adjust the landscape arrangement portion10(arrangement surface11) and the portrait arrangement portion20(arrangement surface21) from the state illustrated inFIG.9Ato the state illustrated inFIG.6Ais adoptable.

Further, a configuration in which the tilt angle adjustment mechanism (X-axis rotation adjustment mechanism) for the landscape orientation and the tilt angle adjustment mechanism (X-axis rotation adjustment mechanism) for the portrait orientation are separately provided is adoptable. In this case, it is unnecessary to provide the arrangement surface11and the arrangement surface21with predetermined orthogonal accuracy. Therefore, as compared with the case where the tilt angle adjustment mechanism is shared by the landscape orientation and the portrait orientation, it is possible to increase a tolerance during manufacture. Further, when at least one of the tilt angle adjustment mechanism for the landscape orientation or the tilt angle adjustment mechanism for the portrait orientation is provided on the landscape arrangement portion10side or the portrait arrangement portion20side, it is possible to maintain the tilt angles after adjustment both in the landscape orientation and the portrait orientation.

The adjustment portion40may include a positional adjustment mechanism common to the portrait orientation and the landscape orientation in place of the landscape adjustment portion41and the portrait adjustment portion42. In this case, fine adjustment of the arrangement by the adjustment portion40is necessary every time the arrangement is changed over. However, it is unnecessary to demount the stand from the goniometer every time the arrangement is changed over as described above. Therefore, it is possible to easily change over the arrangement also in this case as compared with the existing technique.

Other Embodiments

FIG.10AandFIG.10Bare diagrams to explain a difference of a measurement result of one-dimensional measurement between the landscape orientation and the portrait orientation. In a case of performing the one-dimensional measurement, measurement focusing on angular resolution can be performed in the landscape orientation, whereas measurement focusing on diffraction intensity can be performed in the portrait orientation.

Referring back toFIG.1, according to an aspect of the present invention, an X-ray diffractometers200including the detector stand1according to the above-described embodiment and the X-ray detector100may be provided. The X-ray diffractometers200is an apparatus performing X-ray diffraction measurement. The X-ray diffractometers200may include an unillustrated goniometer and an X-ray generation apparatus. For example, the goniometer includes a sample stage that supports a sample and rotates. Further, the detector stand1can be coupled to the goniometer such that a distance between the sample on the sample stage and the X-ray detector100supported by the detector stand1is adjustable. When a rotation angle of the sample stage is controlled, the sample is irradiated with an X-ray generated from the X-ray generation apparatus at a predetermined angle. When a predetermined X-ray diffraction condition is satisfied between the X-ray applied to the sample and a crystal lattice plane in the sample, the X-ray is diffracted in the sample. The X-ray detector100detects the X-ray diffracted in the sample. For example, when the X-rays are irradiated to the crystal lattice plane of the sample at an angle θ, the diffraction angle of the X-ray is 2.

The above-described embodiment can be variously modified and changed without departing from the spirit or the scope of the present invention. Further, the features described in connection with one embodiment of the present invention can be used with other embodiments even if not explicitly described above.

The present application is based on and claims priority from Japanese Patent Application No. 2023-012826, filed Jan. 31, 2023, the disclosure of which is hereby incorporated by reference herein in its entirety.